10 7 x 30 July 8, 2019 16 32 64 128 7 10 x 300 7 10 x 3000 1 7 10 x 30 1 4 7 10 x 3000 7 over 10 x 30 7 x 10 3 x 30 7 x 10 30 x 7 3 7×10