18.25*59/5-11.8*69/4kj

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18.25*59/5-11.8*69/4kj18.25*59/5-11.8*69/4kj18.25*59/5-11.8*69/4kj11.811.818.25*59/5-11.8*69/4=18.25

18.25*59/5-11.8*69/4kj
18.25*59/5-11.8*69/4
kj

18.25*59/5-11.8*69/4kj
11.8

11.8

18.25*59/5-11.8*69/4
=18.25*11.8-11.8*17.25 →化成小数
=(18.25-17.25)*11.8
=1*11.8
=11.8