diff --git a/calculator.py b/calculator.py
index b4d5570..686e390 100644
--- a/calculator.py
+++ b/calculator.py
@@ -1,121 +1,121 @@
 from tkinter import *
 
 root = Tk()
-root.title("Simple Calculator")
-
-e = Entry(root, width=35, borderwidth=5)
-e.grid(row=0, column=0, columnspan=3, padx=10, pady=10)
-
-#e.insert(0, "")
-
-def button_click(number):
-	#e.delete(0, END)
-	current = e.get()
-	e.delete(0, END)
-	e.insert(0, str(current) + str(number))
-
-def button_clear():
-	e.delete(0, END)
-
-def button_add():
-	first_number = e.get()
-	global f_num
-	global math
-	math = "addition"
-	f_num = int(first_number)
-	e.delete(0, END)
-
-def button_equal():
-	second_number = e.get()
-	e.delete(0, END)
-	
-	if math == "addition":
-		e.insert(0, f_num + int(second_number))
-
-	if math == "subtraction":
-		e.insert(0, f_num - int(second_number))
-
-	if math == "multiplication":
-		e.insert(0, f_num * int(second_number))
-
-	if math == "division":
-		e.insert(0, f_num / int(second_number))
-
-	
-
-def button_subtract():
-	first_number = e.get()
-	global f_num
-	global math
-	math = "subtraction"
-	f_num = int(first_number)
-	e.delete(0, END)
-
-def button_multiply():
-	first_number = e.get()
-	global f_num
-	global math
-	math = "multiplication"
-	f_num = int(first_number)
-	e.delete(0, END)
-
-def button_divide():
-	first_number = e.get()
-	global f_num
-	global math
-	math = "division"
-	f_num = int(first_number)
-	e.delete(0, END)
-
-
-# Define Buttons
-
-button_1 = Button(root, text="1", padx=40, pady=20, command=lambda: button_click(1))
-button_2 = Button(root, text="2", padx=40, pady=20, command=lambda: button_click(2))
-button_3 = Button(root, text="3", padx=40, pady=20, command=lambda: button_click(3))
-button_4 = Button(root, text="4", padx=40, pady=20, command=lambda: button_click(4))
-button_5 = Button(root, text="5", padx=40, pady=20, command=lambda: button_click(5))
-button_6 = Button(root, text="6", padx=40, pady=20, command=lambda: button_click(6))
-button_7 = Button(root, text="7", padx=40, pady=20, command=lambda: button_click(7))
-button_8 = Button(root, text="8", padx=40, pady=20, command=lambda: button_click(8))
-button_9 = Button(root, text="9", padx=40, pady=20, command=lambda: button_click(9))
-button_0 = Button(root, text="0", padx=40, pady=20, command=lambda: button_click(0))
-button_add = Button(root, text="+", padx=39, pady=20, command=button_add)
-button_equal = Button(root, text="=", padx=91, pady=20, command=button_equal)
-button_clear = Button(root, text="Clear", padx=79, pady=20, command=button_clear)
-
-button_subtract = Button(root, text="-", padx=41, pady=20, command=button_subtract)
-button_multiply = Button(root, text="*", padx=40, pady=20, command=button_multiply)
-button_divide = Button(root, text="/", padx=41, pady=20, command=button_divide)
-
-# Put the buttons on the screen
-
-button_1.grid(row=3, column=0)
-button_2.grid(row=3, column=1)
-button_3.grid(row=3, column=2)
-
-button_4.grid(row=2, column=0)
-button_5.grid(row=2, column=1)
-button_6.grid(row=2, column=2)
-
-button_7.grid(row=1, column=0)
-button_8.grid(row=1, column=1)
-button_9.grid(row=1, column=2)
-
-button_0.grid(row=4, column=0)
-button_clear.grid(row=4, column=1, columnspan=2)
-button_add.grid(row=5, column=0)
-button_equal.grid(row=5, column=1, columnspan=2)
-
-button_subtract.grid(row=6, column=0)
-button_multiply.grid(row=6, column=1)
-button_divide.grid(row=6, column=2)
-
-
-
-
-
-
+root.title("Calculator")
+
+#font size
+large_font = ('Verdana',17)
+small_font = ('Verdana',12)
+
+#functions for buttons
+def num_click(number):
+    current= ent.get()
+    ent.delete(0,END)
+    ent.insert(0, str(current) + str(number))
+
+def add_click():
+    global num1   #num1 is set to global so it can be used outside function
+    num1= ent.get() #num1 gets the number in the entry field before the add button is clicked
+    global fun #fun can be used globally
+    fun="add" #function of add
+    ent.delete(0, END)
+
+def sub_click():
+    global num1
+    num1 = ent.get()
+    global fun
+    fun="sub"
+    ent.delete(0, END)
+
+def mul_click():
+    global num1
+    num1 = ent.get()
+    global fun
+    fun="mul"
+    ent.delete(0, END)
+
+def div_click():
+    global num1
+    num1 = ent.get()
+    global fun
+    fun="div"
+    ent.delete(0, END)
+
+def equal_click():
+    num2= ent.get() #gets the number in the entry tab present before clicking equal
+    ent.delete(0, END) #delete whats on the screen when equal pressed
+    if fun=="add":
+        ent.insert(0,eval(num1) + eval(num2))
+    elif fun == "sub":
+        ent.insert(0, eval(num1) - eval(num2))
+    elif fun == "mul":
+        ent.insert(0, eval(num1) * eval(num2))
+    elif fun == "div":
+        ent.insert(0, eval(num1) / eval(num2))
+
+def clear_click():
+    ent.delete(0, END) #deletes everything in the entry field
+
+
+
+# entry field row 0
+ent = Entry(root, width=20,borderwidth=5,font=large_font)
+ent.grid(row=0, column=0, columnspan=4, padx=5, pady=5)
+
+# buttons
+#row 1
+but_7 = Button(root, text="7", padx=30, pady=30,font=small_font, command=lambda: num_click(7))
+but_8 = Button(root, text="8", padx=30, pady=30,font=small_font, command=lambda: num_click(8))
+but_9 = Button(root, text="9", padx=30, pady=30,font=small_font, command=lambda: num_click(9))
+but_clear = Button(root, text="C", padx=31, pady=30,font=small_font, command=clear_click)
+
+#row 2
+but_4 = Button(root, text="4", padx=30, pady=30,font=small_font, command=lambda: num_click(4))
+but_5 = Button(root, text="5", padx=30, pady=30,font=small_font, command=lambda: num_click(5))
+but_6 = Button(root, text="6", padx=30, pady=30,font=small_font, command=lambda: num_click(6))
+but_add = Button(root, text="+", padx=30, pady=30,font=small_font,command= add_click)
+
+#row 3
+but_1 = Button(root, text="1", padx=30, pady=30,font=small_font, command=lambda: num_click(1))
+but_2 = Button(root, text="2", padx=30, pady=30,font=small_font, command=lambda: num_click(2))
+but_3 = Button(root, text="3", padx=30, pady=30,font=small_font, command=lambda: num_click(3))
+but_sub = Button(root, text="-", padx=33, pady=30,font=small_font, command=sub_click)
+
+#row 4
+but_period = Button(root, text=".", padx=31, pady=30,font=small_font, command=lambda: num_click("."))
+but_0 = Button(root, text="0", padx=30, pady=30,font=small_font, command=lambda: num_click(0))
+but_mul = Button(root, text="x", padx=32, pady=30,font=small_font, command=mul_click)
+but_div= Button(root, text="÷", padx=28, pady=30, font=small_font,command=div_click)
+
+#row 5
+but_equal = Button(root, text="=", padx=150, pady=12,font=large_font, command=equal_click)
+
+# button placement
+#row 1
+but_7.grid(row=1, column=0)
+but_8.grid(row=1, column=1)
+but_9.grid(row=1, column=2)
+but_clear.grid(row=1, column=3)
+
+#row 2
+but_4.grid(row=2, column=0)
+but_5.grid(row=2, column=1)
+but_6.grid(row=2, column=2)
+but_add.grid(row=2, column=3)
+
+#row 3
+but_1.grid(row=3, column=0)
+but_2.grid(row=3, column=1)
+but_3.grid(row=3, column=2)
+but_sub.grid(row=3, column=3)
+
+#row 4
+but_period.grid(row=4, column=0)
+but_0.grid(row=4, column=1)
+but_mul.grid(row=4, column=3)
+but_div.grid(row=4, column=2)
+
+#row 5
+but_equal.grid(row=5, column=0, columnspan=4)
 
 root.mainloop()
-