这是一道题还是3道题!3道0.125*3/4+1/8*8.25+12.5 =1/8×0.75+1/8×8.25+1/8×100=1/8×(0.75+8.25+100)=1/8×109=109/82又1/2*6.6+2.5*6又3/5=2.5×6.6+2.5×6.6=2×2.5×6.6=33（111+999）/［56*（3/7-3/8）］=（111+999）/(56×3/7-56×3/8)=（111+999）/(24-21)=（111+999）/3=999/3+111/3=333+37=370