(128.55-4.95×10)×0.374-2×11.4×√0.374+4.95×10
    (43.55-0.5×10)×0.374-2×11.4×√0.374+0.5×10
    43.55×0.374-2×11.4×√0.374
    34×0.374-2×11.4×√0.374
    29.45+19.3×9.35
    6.41+19.2×1.2
    18.3×0.35
    18.3×3.5
    182.7+19.3×9.35
    159.66+19.2×1.2
    128.55+18.3×1.7
    19.1×4.45+43.55
    19.1×0.5+34
    330×4909×(1200-50-50)
    cos60
    cos15
    C(3,2)
    A(3,1)
    A(2,1)
    4372048867×0.1189+7425000×0.4627

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