(8.9*11.62+20.49*8.46+849.12*3.65+45.58*0.31-122.15*10.23-9.32*0.064)/5.73
    (8.9*11.62+20.49*8.46+849.12*3.65+45.58*0.31-229.67*10.23-9.32*0.064)/5.73
    (8.9*11.62+20.49*8.46+849.12*3.65+45.58*0.31-177.67*10.23-9.32*0.064)/5.73
    2.875/3×(2×179.457+216.021)/(179.457+216.021)
    2.875/2×(179.457+216.021)
    2.875/3×(2×49.485+216.021)/(49.485+216.021)
    2.875/2×(49.485+216.021)
    0.9/2×46.095
    (2+(3-2)/(20000-3000)*(9823.69-3000)）*1.2*0.8
    (2+(3-2)/(20000-3000)*(9823.69-3000)*1.2*0.8)
    (4+(4-8)/(20000-3000)*(9823.69-3000)）*1.2*0.8
     (4+(4-8)/(20000-3000)*(9823.69-3000)*1.2*0.8
     (4+(4-8)/(20000-3000)*(9823.69-3000))*1.2*0.8
    4.204×(10.7×0.9+11.4×2.875)+10×(2.875+0.9)
    8.314×1623.15×{0.58×ln（0.58/0.98）+0.4×ln（0.4/0.98）-0.6×ln（0.6/0.99）-0.39×ln（0.39/0.99）}+663.318
    1.1×1.1×2.01
    8.314×1623.15×{0.53×ln（0.53/0.98）+0.45×ln（0.45/0.98）-0.55×ln（0.55/0.99）-0.44×ln（0.44/0.99）}+663.318
    4.204×(10.7×0.9+11.4×8.4)+10×9.3
    4.204×10.7×0.9+10×0.9
    0.238×(18.7×3.9+19×5.3+9.4×1.4+10.1×3.1+10.7×6.2+11.4×8.4+20)+10×19.1

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