86.4/0.24*0.25 (如何简便)

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86.4/0.24*0.25(如何简便)86.4/0.24*0.25(如何简便)86.4/0.24*0.25(如何简便)86.4/0.24*0.25=86.4/24*25=86.4÷4÷6×25=21

86.4/0.24*0.25 (如何简便)
86.4/0.24*0.25 (如何简便)

86.4/0.24*0.25 (如何简便)
86.4/0.24*0.25
=86.4/24*25
=86.4÷4÷6×25
=21.6÷6×25
=3.6×25
=90

86.4/0.24*0.25
=21.6*4/0.24*0.25
=21.6/0.24*(4*0.25)
=90*1
=90