8.6x0.2+0.86x8=8.6x0.2+8.6x0.8=8.6x(0.2+0.8)=8.6x1=8.6
8.6*1.2+0.86*8=8.6*0.2+8.6*0.8=8.6*(0.2+0.8)=8.6*1=8.6
