计算步骤为:=36X(3X5)X(100-4)=180X3X(100-4)=180X(300-12)=180X300-180X12=54000-2160=51840
36×15×96=9×(4×15)×96=9×60×(100-4)=540×100-540×4=54000-2160=51840