Mathematics
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    106.80×0.3=
    1-4+3
    √18^2-(90/13)^2
    84-36+24=
    142+237/300*200
    sin40÷sin80
    [2046×(1+0.0518)×1.0784×1.2193+0]×0.9830
    [2046×(1+0.0518)×1.0784×1.2193+0]×0.9830
    [1-1/(1+6.50%)^56.26]/[1-1/(1+6.50%)^70]
    arctan(1/3)
    1.02^3.81
    5+6=
    1/335
    1/206209
    1/89795
    3*3*43*5419
    17*61681
    3*174763
    5*13*37*109
    3*43691

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