2222*0.17+6666*0.9+3333*0.4

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2222*0.17+6666*0.9+3333*0.42222*0.17+6666*0.9+3333*0.42222*0.17+6666*0.9+3333*0.42222*0.17+6666*0.9+

2222*0.17+6666*0.9+3333*0.4
2222*0.17+6666*0.9+3333*0.4

2222*0.17+6666*0.9+3333*0.4
2222*0.17+6666*0.9+3333*0.4里面的0.17是不是1.
2222*1.7+6666*0.9+3333*0.4
=1111*3.4+1111*5.4+1111*1.2
=1111*(3.4+5.4+1.2)
=1111*9
=9999