6 4 7 x 1 3 8 July 8, 2019 16 32 64 128 6 7 1 2 x 3 4 5 8 4 7 x 6 5 1 3 8 3 6 7 3 8 1 2 x 4 3 6 7/8 x 4 1/4 x 3 1/8 (6 8 - 4 7)/(1 4)
