C применением скрипта, который Вы удалили из поста.
Код:
@Echo Off
SetLocal enabledelayedexpansion
set num1=4000000000
set num2=6000000000
Call :_convert %num1% num1MB
Call :_convert %num2% num2MB
echo %num1% %num1MB% Мб
echo %num2% %num2MB% Мб
pause
exit /b
:_convert
Set Cnt=%1
Call:UDIV2 %Cnt% dirsizeMB 20
Call:UMUL2 %dirsizeMB% CntT 20
Call:SUM %Cnt% -%CntT% ost
Set/a $.mb=(%ost%*100)/(1024*1024)
Set "$.mb=0%$.mb%"& Set "$.mb=!$.mb:~-2!"
Set %2=%dirsizeMB%,%$.mb%
GoTo :EOF
:SUM %uint% %uint% %VarRes%
::----------------------------
SETLOCAL EnableDelayedExpansion
(set "$a=%~1"& set "$b=%~2"
if "!$a:~,1!"=="-" (set "$az=-"&set "$a=!$a:-=!") else set "$az="
if "!$b:~,1!"=="-" (set "$bz=-"&set "$b=!$b:-=!") else set "$bz="
for /f "tokens=* delims=0" %%i in ("!$a:~-9!") do set/a "$al=%%i+0"&set/a "$ah=!$a:~,-9!+0"
for /f "tokens=* delims=0" %%i in ("!$b:~-9!") do set/a "$bl=%%i+0"&set/a "$bh=!$b:~,-9!+0"
set/a "$sl=(!$az!!$al!)+(!$bz!!$bl!)"&set/a $p=!$sl:~,-9!+0&set/a "$sl=!$sl!-(!$p!000000000)"
set/a "$sh=(!$az!!$ah!)+(!$bz!!$bh!)+(!$p!+0)"
if !$sh! gtr 0 if !$sl! lss 0 set/a $sh-=1& set/a "$sl=(1000000000+!$sl!)"
if !$sh! lss 0 if !$sl! gtr 0 set/a $sh+=1& set/a "$sl=(!$sl!-1000000000)"
for /f "delims=0123456789" %%i in ("!$sh!!$sl!") do set "$z=%%i"
if !$sh! equ 0 if !$sl! equ 0 set "$z=0"
set "$sl=00000000!$sl:-=!"
)
for /f "tokens=* delims=0" %%i in ("!$sh:-=!!$sl:~-9!") do ENDLOCAL& set "%~3=%$z%%%i"
GoTo:EOF
:UDIV2 %uint% %VarRes% %uint%
::----------------------------
SETLOCAL EnableDelayedExpansion
(set "$a=%~1"& set/a "$c=%~3+0"& if !$c! equ 0 set "$c=1"
for /f "tokens=* delims=0" %%i in ("!$a:~-9!") do set/a "$al=%%i+0,$ah=!$a:~,-9!+0"
for /l %%i in (1,1,!$c!) do (
set/a "$p=$ah&1,$ah>>=1,$al>>=1"
if !$p!==1 set/a $al=$al+500000000)
set "$z="& if !$ah! equ 0 if !$al! equ 0 set "$z=0"
)
for /f "tokens=* delims=0" %%i in ("!$ah!!$al!") do ENDLOCAL& set "%~2=%$z%%%i"
GoTo:EOF
:UMUL2 %uint% %VarRes% %uint%
::----------------------------
(SETLOCAL EnableDelayedExpansion
set %~2=%~1& set/a "$c=%~3+0"& if !$c! equ 0 set "$c=1"
for /l %%i in (1,1,!$c!) do Call:SUM !%~2! !%~2! %~2
for /f %%i in ("!%~2!") do ENDLOCAL& set "%~2=%%i"
)
GoTo:EOF
