3 7 8 x 7 1 2 July 8, 2019 16 32 64 128 3 7 8 x 7 1 2 envelope 3 7 8 x 2 1 4 1 7 8 x 1 )= 3 7 2x 7 3 8 x 1 1 2 as a mixed number 3 7/8 x 2
