48乘以0.72除以0.45乘以36 要用简便运算

题目

48乘以0.72除以0.45乘以36 要用简便运算
不能超过7点,

答案

48*0.72/0.45*36
=48*0.8*0.9/0.9/0.5*36
=48*0.8/0.5*36
=3916.8