e∧0.1028
    lg9/lg8
    arcsin(0.098906)
    arcsin(1/1.5163)
     0.79×0.56+7.9×0.087-43×0.0079
     0.79×0.56+7.9×0.087-43×0.0079
    0.79×0.56+7.9×0.087-43×0.0079
    !(5)
    tan45
    arcsin0.025871
    150*sin82/5741.5
    √(5750*5750+150*150-5750*150*cos82)
    arccos0.2
    arccos0.5
    arccos0.5
    arccos1/5
    45*45
    75*75
    130/0.25
    130/1/4

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