0.4×207.6×0.476
    (277.3×10^3)/(0.950×7917×215)
    (48.9×10^3)/(0.608×574)+(0.094×10^6)/7784
    (15.2×10^6)/(0.76×237000×215)
    1.07-0.282/0.92
    0.95×4320/〖187.56〗^2 ×(3555×200)/237000×[√(1+((187.56×11.4)/(4.4×200))^2 )+0] √(235/235)
    (3976×11.4)/(100×200)
    3976/21.2
    4.108-(0.486+0.484)/2
    4.963-(3.576+3.524)/2
    5.018-4.378
    (18.8×10^3-0.3×670.5×10^3)/(0.9×0.437×300)
    0.4×670.5×0.476
    120.8+（181.0-120.8）/（8000-5000）×（6000-5000）
    (314.7×10^3)/(1×π×80^2/4)
    (314.7×10^3)/(1×π×120^2/4)
    (314.7×10^3)/(1×π×40^2/4)
    (139.1×10^3)/(0.957×2503×305)
    (139.1×10^3)/(0.921×2503×305)
    (2134.8×10^3)/(0.98×31730×215)

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