5 / 8 of 40 is () () 5 / 8 of () is 40

5 / 8 of 40 is () () 5 / 8 of () is 40

5 out of 8 of 40 is (25) (5 out of 8 of 64) is 40
40×5/8=25 40÷5/8=64