4.06*125%+7.36/五分之四-0.142*12.5
=4.06*1.25+7.36*1.25-1.42*1.25
=1.25*(4.06+7.36-1.42)
=1.25*10
=12.5还有呢（50*49*48）/（16*15*14）=50/15*49/14*48/16=10/3*7/2*3=35