Mercury sidereal period days: 87.9693
879693
8! = 40320
7! = 5040
9! = 362880
6! = 720
9! = 362880
3! = 6
4032000000
50400000
362880000
72000
3628800
6
~~~~~~~~
4448980800
4 * 4 * 4 * 8 * 9 * 8 * 8 = 294912
294912 / 64 = 4608
4608 / 64 = 72
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