Exactly 9 times
68 times with a remainder of 4
68 goes 9 times in 621.52, leaving 9.52 (621.52-9x68).
615 ÷ 9 = 68 with remainder 3
6 with remainder 9.
9 times with a remainder of 5
7 times with a remainder of 5
9 times
7 with remainder 5.
9 times with a remainder of 5
4
Four times... with 12 remaining.