7.7*1016/7.7*12.5用递等式计算,要简便计算
问题描述：
7.7*1016/7.7*12.5用递等式计算,要简便计算
答
7.7*1016/7.7*12.5
=1016/12.5
=10160/125
=10160/125
=2032*5/5*25
=2032/25
=2032/(100/4)
=2032*4/100
=8128/100
=81.28