Mathematics
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    1/20
    33555273/137
    log(100000/10)^2.4
    log(1000/10)^2.4
    log(100/10)^2.4
    7/12*84
    3125*3125
    78/13除3
    1/64
    134/2
    3969/63
    49*81
    83^2
    arctan(2*3^0.5)
    arctan(2*3^0.5)
    20cos(77)
    3.14%*1100/2000+5.5%*900/2000
    40+(12+20)*0.75-(800+600+900+700-180-220)/2*4.07%
    (4800+4600+2850+2650+2000+2000-2500-2000)/2
    3.56*4850/9650+5*4800/9650

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