0.02*38.7*50 39.6*99 1.25*（8+0.8） 1.25*0.2*32 4.57*3.1-2.1*4.57 2.5*2.4 全部用简便运算患者信息：其他

0.02*38.7*50=0.02*50*38.7=1*38.7=38.739.6*99=39.6*(100-1)=3960-39.6=3920.4 1.25*（8+0.8）=1.25*8+1.25*0.8=10+1=111.25*0.2*32 =1.25*8*4*0.2=10*4*0.2=40*0.2=84.57*3.1-2.1*4.57 =4.57*(3.1-2.1)=4.57*1=4.5...