You have to divide 210 by 64 and you will get 3.28. So it doesn't divide completely.
2 with 18 remaining 82 - 18 = 64 = 32 x 2
12 can go into 64, 5 times.
It goes in 64 times.
522/64 = 8.15625 times.
64 does not go into 16, however, 16 goes into 64 four times.
64
Four goes into 64 exactly 16 times
64 times (640 ÷ 10 = 64).
Three full times, with a remainder of 10.
512 ÷ 64 = 8
64/32 = 2