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22*72 = 196
32*52 = 225
2^2 = 4
2 x 72 = 98
22 x 32 = 36
245 = 51 x 72
23*32*5 = 360
22*52*43 = 4300
31 x 72 = 147
75 = 3 x 52
35 x 7 = 1701
441 = 32 x 72
2 x 52 x 7 = 350