19.6除以0.4除以0.5的结果是多态脊少答:2.4519.6/物闭拍0.4/0.5=9898,谢谢,罩羡望采纳98答案等于98(19.6/0.4)/0.5=19.6/(0.4*0.5)=19.6/0.2=98一个数0.4除0.5为什麽等于0