0.56×15/28= 8/7×0.25= 7/15+3/10= 2-5/8= 2.7×4/9=
问题描述：
0.56×15/28= 8/7×0.25= 7/15+3/10= 2-5/8= 2.7×4/9=
0.56×15/28=
8/7×0.25=
7/15+3/10=
2-5/8=
2.7×4/9=
10/21×0.28=
答
1.5632.6588