10/(0.029*1.44)
    4.5/12.5
    361*(1-0.05)=
    e^(-2)
    e^(-3)
    324*4
    !(767798567)
    109*3
    （45+62）*85+6
    66*5+4*5
    （54+64）*5+6
    2864.789024/1.799
    2864.789024/1.819
    2*cos10
    2*sin10
    arctan(3^0.5/21)
    12/0.6
    12/1.5
    8*cos30
    cos30*6

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