4532/(573-298)
    5.67*0.8*（573^4-298^4）/10^8
    360.1*0.03511/1.7
    (4.67*10^10)^(1/3)
    9.8*275*2.152^3*cos17*0.7014/435.5/2.975^2
    3.327322*1.202168
    lnx=4:x
    e^x=4:x
    16:e^x*lnx
    720(1+a)^2=2205
    x+x×5×0.01=799.08
    10^-1
    50减a加30等于48
    （31542676.48-x）*0.11=3154267.65
    √0.059
    x^2=0.059
    x^2/（0.1-x）=0.059
    1204161.8182/12
    1589493.6 /1.32
    2501330.4-705401.424

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