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4.5*11.1*4.8/(33.3*0.8*0.9)这道题怎样简算?

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4.5*11.1*4.8/(33.3*0.8*0.9)这道题怎样简算?
4.5*11.1*4.8/(33.3*0.8*0.9)这道题怎样简算?
4.5*11.1*4.8/(33.3*0.8*0.9)
=1.5*11.1*4.8/(11.1*0.8*0.9)
=1.5*11.1*6/(11.1*1*0.9)
=11.1*9/(11.1*1*0.9)
=10