70 times :)
64 times (640 ÷ 10 = 64).
640 ÷ 8 = 80.
640/4 = 160
640 ÷ 8 = 80
640 ÷ 16 = 40
Exactly 79 times
64 times.
71.1111 times.
7 times with a remainder of 38
30 times with a remainder of 10
79/7 = 11.286 times (approx).