arctan22.25
    arctan0.055
    72/3*2
    16967*1.6
    -10lg0.06
    lg0.06
    arctan11.2433364
    arctan1.85876
    arctan0.9762484
    arctan0.54494
    arctan0.68965246
    arctan0.544431
    arctan0.6707325
    arctan0.85816363
    arctan1.158353
    arctan3.76
    arctan3.76
    arctan1.7551755
    10*lg(3.14*3*√(14.71^2-1)/(2*ln(14.71+√(14.71^2-1))))
    10lg(3*3.14*√(16.86^2-1)/(2*ln(16.86+√(16.86^2-1))))

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