原式=-3.14*（35.2+46.6+18.2）=-3.14*100=-314
-3.14*35.2+6.28*（-23.3）-1.57*36.4=-35.2*1*3.14-23.3*2*3.14-36.4*1/2*3.14=-(35.2+46.6+18.2)*3.14=-100*3.14=-314
