8^(2/3)(sqrt(16))^3
    2*7.2*19.3* tan2（45-π/2）+219.62
    295.79* tan（45-π/2）* tan（45-π/2）-2*24* tan（45-π/2）
    tan（45-π/2）
    295.79+π*15+22.57-π/2*7.2*10
    0.2146*（10.3+11.5）/4*19.3
    14.3*（20.3-1.1）+19.3*1.1
    -6.2775×(0.0324)^3+22.501×(0.0324)^2-46.789×0.0324+110.6
    -6.2775×(0.3194)^3+22.501×(0.3194）^2-46.789×0.3194+110.6
    -6.2775×（0.3903）^3+22.501×（0.3903）^2-46.789×0.3903+110.6
    15*130+12*【1
    1150/3
    -6.2775×0.0268^3+22.501×0.0268^2-46.789×0.0268+110.6
    -6.2775×0.3030^3+22.501×0.3030^2-46.789×0.3030+110.6
    -6.2775×0.9197^3+22.501×0.9197^2-46.789×0.9197+110.6
    -6.2775×（0.3748^3）+22.501×0.3748^2-46.789×0.3748+110.6
    -6.2775×0.3748^3+22.501×0.3748^2-46.789×0.3748+110.6
    (304-152-13.5)/18
    (304-13.5-13.5-82.75-82.75)/18
    (1.054^1-1.3858/12)*0.054

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