Splitting directories with many files

g=0

t=0

ff=40000
#ff=5

destiny=output.save.$t
mkdir $destiny

Loop_array=(`ls -1 output`);
Total_loop_num=${#Loop_array[*]};
for((i=0;i<$Total_loop_num;i++))
do
   echo -ne "Progress: $[ ($i+1)*100/$Total_loop_num ]%\r";
   e=${Loop_array[$i]};
  

#for e in output.save/*
# do

  this=$((g%ff))
  
  name=`basename $e`
  orig=output/$e

  if [ 0 == $this ]
  then
   t=$((t+1))
   destiny=output.save.$t
   mkdir $destiny
  echo $destiny
  fi
  
  mv $orig  $destiny

# echo $destiny/$name
  if [  -d $destiny/$name ]
  then
   g=$((g+1))
   else
   exit 0
  fi

#done

done;
echo "Loop finished.";