原式=-370*(-1/4)+0.25*24.5+(-5.5*25/100)=(370+24.5-5.5)*0.25=389*0.25=(400-11)*0.25=100-(12-1)*0.25=97+0.25=97.25
-370*(-1/4)+0.25*24.5+(-5.5*25/100)=0.25*（370+24.5-5.5）=389*0.25
