echo off cls mode con: cols=55 lines=15 :MAIN color 07 cls set /p num1=\"Specify first number: \" cls set /p num2=\"Specify second number: \" cls set /a num3=%nu
Batch does not support floating point arithmetic. You have to rely on external scripts.
http://www.computing.net/howtos/show/batch-script-floating-point-math/753.html
Floating point division in a dos batch