e0.01
    616÷6
    7+3/4
    [0.22+(1-0.7)/2.5]*0.5
    1.6*45+54*1.6+1.6
    ln（5/12）
    (82^2-4*256^2*(sin(3.1415926536/19.818267))^2)^(1/2)
    (3200000/1.06-46.02*30000-54.79*16000)/(3200000/1.06)
    82^2*10^2 - 4*128.6718576257230*10^2*(sin(3.1415926536/10))^2
    (sin30*sin80)/(sin40*sin50)
    sin30*sin50
    (66*lg2+42*lg3+7*lg7)/lg10+35
    lg(2^66*3^42*7^7)/lg10
    27/（6.02×10＾23）
    (200000/1.06-0-0-110344.83)/(500000/1.06-0)
    (200000/1.06-0-0-110344.83)/(200000/1.06-0)
    (500000/1.06-0-0-110344.83)/(500000/1.06-0)
    13*16/13
    (380000/1.06-5.01*30000-7.46*16000)/(380000/1.06)
    （380000/1.06 - 0 - 0 - 236597.70）/（380000/1.06 - 0）

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