Only once, because after that you do not have 60 to subtract from!
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10
6 times 7 times 24 times 60 times 60 is six weeks in seconds and that is 3,628,800 seconds. Perhaps you might say ten factorial which is ten times nine times eight times seven times six times five times four times three times two times one and that is also 3,628,800.
60
23
Exactly 60 times