Mathematics
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    0.27-0.035
    e^(-5)
    4758*4758-4757*4761-4759*4759+4758*4762
    (7+97+997+9997)/(27+297+2997+29997)
    (123/339+229/251+331/353)*(229/251+3311/353*21/123)*(229/251+331/353)*(123/339+229/251+331/353*21/123)
    (123/339+229/251+331/353)*(229/25+3311/353*21/123)*(229/251+331/353)*(123/339+229/251+331/353*21/123)
    (123/339+29/251+331/353)*(229/25+3311/353*21/123)*(229/251+331/353)*(123/339+229/251+331/353*21/123)
    6.25*0.08
    1/(5*sqrt(6.25))
    1/(3.5*sqrt(1.501))
    1.225*1.225
    3.5*3.5/10
    90-arctan(sqrt(10)/2)-arctan(sqrt(10)/5)
    32*16/5-256/25
    1.42/(8%-3%)
    1/8 - 2/7 + 1/6
    3.14*{(65/2)/1000}²*80*10
    22580 +645+32048+800
    26600000+130960+1028000+9800+1250000
     190+920+560

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