30.9*0.6=18.54怎么验算?
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30.9*0.6=18.54怎么验算?
30.9*0.6=18.54怎么验算?
30.9*0.6=18.54怎么验算?
(30+0.9)X0.6=18+0.54=18.54
30.9*0.6=18.54怎么验算?
30.9*0.6=18.54怎么验算?
30.9*0.6=18.54怎么验算?
(30+0.9)X0.6=18+0.54=18.54