(52.1087+87.6407)×6.75*0.5
    (53.8+67.39)×1.475*0.5
    (53.8+67.39)×1.475
    (30.01+63.39)×1.8*0.5
    (30.01+63.39)×1.8
    8.65×(1.525-0.857)*0.5
    1/2×[8.65×(1.525-0.857)+(30.01+63.39)×1.8+(53.8+67.39)×1.475+(52.1087+87.6407)×6.75]
    (20+18.5×1.525+19.8×3.8+19.4×1.8+18.8×1.475+18.8×6.75)×0.28-2×0×√0.28
    (20+18.5×1.525+19.8×3.8+19.4×1.8+18.8×1.475)×0.28-2×0×√0.28
    (20+18.5×1.525+19.8×3.8+19.4×1.8+18.8×1.475)×0.49-2×17×√0.49
    (20+18.5×1.525+19.8×3.8+19.4×1.8)×0.49-2×17×√0.49
    (20+18.5×1.525+19.8×4.8+19.4×1.8)×0.61-2×29×√0.61
    (20+18.5×1.525+19.8×43.8+19.4×1.8)×0.61-2×29×√0.61
    (20+18.5×1.525+19.8×3.8)×0.61-2×29×√0.61
    （20+18.5×1.525+19.8×3.8）×0.66-2×55×√0.66
    （20+18.5×1.525）×0.66-2×55×√0.66
    (20+18.5×1.525) ×0.70-2×15×√0.70
    1/(602/86)×1/3 [0.76×(4.1+1.2-0.857)+58.254×1.5+86.74×1.5+457.11×6.7]
    (50.59+85.86)×6.7*0.5
    (50.92+64.73)×1.5*0.5

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