Mathematics
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    2 × (30 × 20 + 30 × 20 + 20 × 20)
    2 × (3 × 2 + 3 × 1 + 2 × 1)
    4 × 24 + 2 × 18 + 2 × 15 + 10
    0.57*779/0.43
    (714*4520/101300)^1/3
    (65×9+80)÷(9+1)=
    90+arctan(4.8/2.5)-arctan(4.8/5)-arctan(2.4)-arctan(4.8/12.5)
    1/0.08
    90+arctan(4.8/2.5)-arctan(4.8/5)-arctan(2.4)-arctan(4.8/125)
    12/2.5
    90-arctan(sqrt(3))-arctan(2*sqrt(3)/5)
    8648.15*(1-1/(1+0.00591)^12)/0.00591
    8648.15*(1-1/(1+0.0059)^12)/0.0059
    8648.15*(1-1/(1+0.0058)^12)/0.0058
    8648.15*(1-1/(1+0.0055)^12)/0.0055
    8648.15*(1-1/(1+0.0052)^12)/0.0052
    8648.15*(1-1/(1+0.005)^12)/0.005
    8648.15*(1-1/(1+0.006)^12)/0.006
    8648.15*(1-1/(1+0.007)^12)/0.007
    8648.15*(1-1/(1+0.008)^12)/0.008

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