@ECHO OFF
SETLOCAL ENABLEDELAYEDEXPANSION

SET /A "totalSum=0"

FOR %%# IN (%*) DO (
	SET "currentSum=!totalSum!"
	SET /A "totalSum=!totalSum!+%%#"
	ECHO:!currentSum! + %%# = !totalSum!
)

ECHO+
ECHO:Resultado: !totalSum!

PAUSE
EXIT /B 0