21
3/8 x 56 = 21
5/56
3/8 + 5/7 = 21/56 + 40/56 = 61/56 = 1.08928571428571
3/8 of 56 is 21.
3 2/7 + 6 3/8 = 3 16/56 + 6 21/56 = 9 37/56
56 of them.
5 and 49/56 - 3 and 4/56 = 2 and 45/56
5/8 of 3/7 is 15/56
Just multiply 8 times 7! That would be 56.
9
71/8 of 56 = 7