45.72×[(1-1/9)÷16÷(1+3/5)]
=45(18/25)×[(8/9)÷16÷(8/5)]
=45(18/25)×[8/9×1/16×5/8)]
=1143/25×5/144
=1143/720
=127/80
=1(47/80)
80分之77
80分之77 ！~
45.72×[(1-1/9)÷16÷(1+3/5)]
=45(18/25)×[(8/9)÷16÷(8/5)]
=45(18/25)×[8/9×1/16×5/8)]
=1143/25×5/144
=77/80)
等于1.5875
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