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200
17x17.7=300.9
(121,2)(22,11)
(55,3)(33,5)(15,11)
(15,2)(10,3)(6,5)
4 x 13
How about: 11 times 11 = 121 as an example
It is 6 because: (6*7)+8 = 50
12 times 9 = 108
108 times 8 is 861
9x12=108
9 times 12 = 108