My version of this calculator below.
Step 1: Open Notepad
Open Note pad
Step 2: How to Make the Program
Type this (you dont need spaces)
echo Add = +
echo Subtract = -
echo Divide = /
echo Multiply = *
echo Put your question here:
set /p equ=
set /a equ=!equ!
Step 3: How to Save the Program
Save as calculator.bat
(bat) - means batch file
a batch file is illegal to send over the internet so send as a text file...
or convert to an exe file which will make it an application.