2.16×0.4=8.64
0.9×5.21=4.689
7.9×7.9=6.241
43×6.7=28.81
4.75×0.984.75 0.85÷0.50.85×2
0.45÷0.090.45×0.09 3.17×0.6050.317×6.05
(元)
最多:(元)
最少:(元)