Mathematics
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    (91.1+3.3)/38.5=
    (87*13.15+5*12.13)/7.96=
    235.8-91.1-53.2-4=
    100.6*6.96/13.15=
    150.6*7.96/13.15=
    [1748×(1+0.0574)×1.1255×1.1028+0]×0.9914
    [1-1/(1+8.0%)^56.33]/[1-1/(1+8.0%)^70]
    arctan1/2
    arctan2
    -43767+1772897.04+425819.92-253022.3-22199.2-25982.11+615712.88+19158
    2778520.8-43767+1772897.04+425819.92-253022.3-22199.2-25982.11+615712.88+19158
    189.8*0.94299*√(1.3*2.58*100000*4.78÷25÷42.733÷42.733÷3.78)
    cos(27.2223)
    √cos(27.2223)
    3.54*189.8*√cos(27.2223)
    3.54*189.8*√cos(27.2223)*√(1.3*2.58*100000*4.78÷25÷42.733÷42.733÷3.78)
    arccos0.91
    [1-1/(1+8.0%)^54.68]/[1-1/(1+8.0%)^70]
    (-1+6×3-√(1-6×3)^2-4×3×8)÷6=
    [1748×(1+0.054)×1.1252×1+0]×0.9897

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