Faster batch file pumper

@echo off
setlocal enabledelayedexpansion
:begin
set path=
set file=
:top
echo First, are the batch and file you wish to add bytes to in the same directory? (Y/N)
set /p directory=
if /i "%directory%"=="Y" goto good
if /i "%directory%"=="n" goto bad
echo Invalid answer
goto top
:good
echo Enter the exact name of the file you wish too add bytes to (example: Minecraft.exe)
set /p file=
set files="%file%"
if exist %files% goto continue
echo The file cannot be found, please make sure you typed the name correctly and that the file is in the same directory as the batch.
goto top
:bad
echo Please enter the file path of the file you wish to add bytes to. (Example: C:\users\username\desktop\)
set /p path=
cd %path%
goto good
:continue
cd %path%
set a=
echo Enter the number of bytes you wish to add to the file: (1,000 bytes = 1KB. 1,000KB = 1MB)
echo ONLY enter numbers, letters will cause an error.
set /p bytes=
if not %bytes% gtr 2 cls&echo Error, invalid input &goto continue
if %bytes% gtr 8176 set end=%bytes%&set bytes=8176 else goto skip
set /a m=%end%/%bytes%
set /a e=%end%-3*%bytes%-2
:skip
set /a byte=%bytes%-2
for /l %%a in (1,1,%byte%) do set a=!a!a
if %bytes% leq 8176 goto end
if defined e for /l %%b in (1,1,%e%) do set b=!b!b
:end
echo %a%>>%files%
echo Operation was successful!
ping -n 7 localhost > nul
pause
goto begin