3.6*42.3*3.75-12.5*14*0.846 如何简便运算

因为 3.75=12.5*0.342.3=0.846*5042.3*3.75=12.5*0.846*15所以3.6*42.3*3.75=12.5*0.846*15*3.6=12.5*0.846*54所以3.6*42.3*3.75-12.5*14*0.846=12.5*0.846*（54-14）=12.5*40*0.846=500*0.846=423