@echo off

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

setlocal

if %1==""
	goto :readEq
else do
	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 do
	echo Incorrect Equation

goto :eof

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