3216=1
count the number of circles in the number like 6 has 1 circle
If 1=5, 2=25, 3=125, 4=625 then 5=??
If 5 + 4 => 9 3 + 5 => 9 9 + 1 => 9 1 + 6 => 8 4 + 2 => 8 1 + 7 => 7 5 + 6 => 6 3 + 7 => 3 7 + 0 => 0 Then 8 – 1 => ??
If 8801=5, 5261=1, 9632=2, 6381=3 then 6321=??