(40.2*8.1*4.8)/(0.048*0.81

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(40.2*8.1*4.8)/(0.048*0.81(40.2*8.1*4.8)/(0.048*0.81(40.2*8.1*4.8)/(0.048*0.81(40.2*8.1*4.8)/(0.048*

(40.2*8.1*4.8)/(0.048*0.81
(40.2*8.1*4.8)/(0.048*0.81

(40.2*8.1*4.8)/(0.048*0.81
(40.2*8.1*4.8)/(0.048*0.81)
约分得:
原式=40.2*10*100=40200

40200