Batch Calculator

hello guys today Im going to show you how to create a batch calculator

the code is as follows

@echo off

:start

cls

echo put equation sign

set /p sign

cls

echo input number 1

set /p num1=

echo input number 2

set /p num2=

set /a num3=%num1%%sign%%num2%

echo answer: %num3%

echo -press any key to reset

timeout /t -1 >nul

goto :star

15 lines to a batch calculator :D

typing>>> * will do multiplication

typing>>> / will do division BUT if answer is not a whole number then it says 1