1 x 81, 3 x 27, 9 x 9, 27 x 3, 81 x 1.
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81 ÷ 9 = 9
16 with 1 remaining 81 - 1 = 80 = 5 x 16
40 with 1 remaining 81 - 1 = 80 = 2 x 40
If going up to 12 times, then 56 is in the 7 times and 8 times tables.
It takes four. 3 x 3 x 3 x 3 = 81