1又1/9除【32又2/5-（32.4-1/3*百分之25)]*12
问题描述：
1又1/9除【32又2/5-（32.4-1/3*百分之25)]*12
答
=10/9÷[32.4-32.4+1/3×1/4)×12
=10/9÷1/12×12
=10/9×12×12
=160