@echo off

if "%1"=="/?" goto :help

setlocal

if "%1"=="" (
	goto :readEq
) else
(
	goto :main
)


:readEq
	echo Type the equation, please
	rem READ

:main

set var=""

:loop
	if ("%1"=="") goto :solve
	set var+=%1
	shift
	goto :loop

:solve
set /a res=var
if errorlevel==0 (
	echo Result = %res%
) else
(
	echo Incorrect Equation
)

goto :eof

:help
echo This is help for you, dunno
goto :eof