Mathematics
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    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)
    (183×10^6)/(1×2400392×215)
    1.07-〖31.4〗^2/44000
    6897/219.9
    (7.0×10^6)/(1×237000×215)
    1.07-〖42.45〗^2/44000
    (1.1×10^(-7)×10^6)/(0.99×166666.68)
    1/(1+〖2.39〗^2/(4.9×1.0×220))

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