e＾95.66
     -arctan0.182
    -arctan0.091
    -arctan0.091
    -arctan0.91
    18 × (0.15 / 60) (0.33)
    √2 √3 √5
    ln2 ln3 ln5
    ln2
    0.013/0.087
    9.4/6.5/6.5*0.06+1/65*0.006
    arccos-0.958
    arccos-0.958
    30000-1
    arccos0.8883
    arccos0.6
    arctan0.6
    arctan1.5
    arctan0.332
    95乘229/145

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