(12458.58×964)/(6642.33×1175)
    ((23×9.6+22×2.5+19.1×2.4+22×0.5)/(9.6+2.5+2.4+0.5))×(8.72+6.28)+20
    (23×6.28×18.56+15×20.93)/(((23×9.6+22×2.5+19.1×2.4+22×0.5)/(9.6+2.5+2.4+0.5))×(8.72+6.28)+20)
    (376.84-22.04×10)×1.402+2×0×1.192+22.04×10
    327.24+18.7×7.46
    309.24+18×1
    272.76+19.2×1.9
    (18.56-1)/tan40
    0+16.9×16.14
    (1770.75×10^3)/(0.974×19478×205)
    (1770.75×10^3)/19478
    (928.2×10^3)/(0.957×20490×205)+(1.0×1527.45×10^6)/(1.0×28622222×(1-0.8×(928.2×10^3)/(4.30×10^7 ))×205)
    (3.14^2×206000×13420)/(1.1×24×24)
    (928.2×10^3)/20490+(1527.45×10^6)/(1×28622222)
    (928.2×10^3)/20490+(1527.45×10^6)/(1×17100000)
    534.34×1.558+2×22.6×1.248
    394.84×1.558+2×22.6×1.248
    (394.84-23.04×10)×1.402+2×0×1.192+23.04×10
    (376.84-22.04×10)×1.402+2×0×1.192+20.04×10
    376.84×1.662+2×29×1.289

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