@echo off
setlocal enabledelayedexpansion
if "%~1"=="" goto noparam
if not exist "%~1\ " goto nocatalog
if not exist "%~1\numb.txt" goto nofile
for /F %%i in ('type "%~1\numb.txt" ^| findstr /rc:"[0-9]"') do (
 set /a n=%%i %% 5
 if "!n!"=="0" echo %%i
)
exit /b
:nocatalog
echo "Заданная папка не найдена"
exit /b
:nofile
echo "Файл не найден"
exit /b
:noparam
echo "Не задано имя папки"
exit /b