Mathematics
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    62.4×0.75
    tan(arccos0.8 )
    0.8×(8+20+50)
    23.23×1.73
    46.47×0.5
    2*30*√(60% )
    tan(arccos0.5)
    tan(arccos(0.5) )
    30e-6
    1.26e-09
    9e-6
    1998/(1998/1999)
    √((12cosπ/3)^^3)
    (3000000*(0.0033+0.003))*1.2*0.68
    log(10,100000)
    log(2,100000)
    arccos(0.2/0.1806352330952756251)
    arccos0.02/0.1806352330952756251
    arccos0.2/0.1806352330952756251
    arctan2.9746

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