如题所述
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0.15 Ã 2.8 = 0.42
1.23 Ã 3.56 = 4.3788
1.5 Ã 2.89 = 4.335
4.4 Ã 5.6 = 24.64
2.1 Ã 8.9 = 18.69
5.9 Ã 2.16 = 12.744
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