Multiply function using Tkinter

[ady1583]

Hello Everyone, i am stuck at the multiply function using Tkinter, any help is greatly appreciated. Addition seems to be fine.

from tkinter import *


def calc_sum(event):
    num1 = int(num1Entry.get())
    num2 = int(num2Entry.get())

    sum = num1 + num2

    sumTotalEntry.delete(0,sum)

    sumTotalEntry.insert(0,sum)

def multiply_num(event):
    num1= num1Entry.get()
    num2= num2Entry.get()

    mul= num1 * num2

    #mulTotalEntry.delete(0,mul)
    mulTotalEntry.insert(0,mul)

root=Tk()


num1Entry = Entry(root)
num1Entry.grid(row=0)

plusLabel = Label(root,text="+",font=("Verdana",8))
plusLabel.grid(row=0,column=1)

num2Entry = Entry(root)
num2Entry.grid(row=0,column=2)

equalButton=Button(root,text="=",font=("Verdana",8))
equalButton.bind('<Button-1>',calc_sum)
equalButton.grid(row=0,column=3)

sumTotalEntry=Entry(root)
sumTotalEntry.grid(row=0,column=4)



mul1Entry = Entry(root)
mul1Entry.grid(row=1)

mulLabel = Label(root,text="*",font=("Verdana",8))
mulLabel.grid(row=1,column=1)

mul2Entry = Entry(root)
mul2Entry.grid(row=1,column=2)

equalButton2=Button(root,text="=",font=("Verdana",8))
equalButton2.bind('<Button-1>',multiply_num)
equalButton2.grid(row=1,column=3)

mulTotalEntry=Entry(root)
mulTotalEntry.grid(row=1,column=4)

root.mainloop()

Below is the error i get

Output:
Exception in Tkinter callback
Traceback (most recent call last):
  File "C:\Program Files\Python35\lib\tkinter\__init__.py", line 1549, in __call__
    return self.func(*args)
  File "C:/Users/auppu/Downloads/Py/2.py", line 18, in multiply_num
    mul= num1 * num2
TypeError: can't multiply sequence by non-int of type 'str'