7 5 8 x 17 July 8, 2019 16 32 64 128 8 11 5 7 x 17 1 17 7 8 x 19 5 8 x 13 16 5 7 x 3 4 x 17 8 7 x 5/8 7 5×8 5 x 7 = 35