It is easy to calculate if you can 1.37.3-1.5/0.24=? 2.0.8x（20-1.25）=? 3.78/0.25/0.4=? Special reminder is out of formula calculation!

1、37.3-1.5÷0.24
=37.3-6.25
=31.05
2、0.8×（20-1.25）
=0.8×20-0.8×1.25
=16-1
=15
3、78÷0.25÷0.4
=78÷（0.25×0.4）
=78÷0.1
=780

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