-3.14*35.2+6.28*(-23.3)-1.57*36.4
=-1.57*2*35.2+1.57*4*(-23.3)-1.57*36.4
=-1.57(2*35.2+4*23.3+36.4)
=-1.57(70.4+93.2+36.4)
=-1.57*200
=-314