Simple calculation of 4 × 0.8 × 2.5 × 12.5

Simple calculation of 4 × 0.8 × 2.5 × 12.5

4×0.8×2.5×12.5
=4x2.5x（12.5x0.8）
=10x10
=100
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How to calculate 12.5 times 7.2

12.5*7.2=125*0.72=(125*8)*0.09=1000*0.09=90

2 / 3 divided by 5 / 8 + 1 / 3 divided by 5 / 8 7 / 12 multiplied by 1 / 3 + 5 / 12 divided by 3

2 / 3 divided by 5 / 8 + 1 / 3 divided by 5 / 8
=2 / 3 by 8 / 5 + 1 / 3 by 8 / 5
=(2 / 3 + 1 / 3) times 8 / 5
=1 by 8 / 5
=8/5
7 / 12 multiplied by 1 / 3 + 5 / 12 divided by 3
=7 / 12 by 1 / 3 + 5 / 12 by 1 / 3
=(7 / 12 + 5 / 12) by 1 / 3
=1 by 1 / 3
=1/3