41.5*8.1+5.37*19+1.1*92.5
=(415*81+537*19+11*925)/100
=(83*5*20*4+415+537*2*10-537+925*10+925)/100
=(33200+10740+9250+415+925-537)/100
=(53190+1340-500-37)/100
=53993/100
=539.93
41.5*8.1+5.37*19+1.1*92.5
1个回答
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