Mathematics
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    2cos270
    2cos270
    (-0.618*2)^2
    24%-54/275
    2/3×60%×40%
    (1+12.3%)²
    20%+arctan(2.5*182.09%-0.5)×20%/π
    arctan(1/3.07)
    arctan(3.07)
    arctan(3.07)
    arctan(sqrt3/3)
    arctan(1/3.07)
    13068/1+1/7*1/7
    14^2-16*14+12
    4.2/0.5+3.8*2
    6/7÷3=
    6/7÷3=
    (99+100+101+102+103+104+105+106+107+108+109+110+111+112+113+114+115+116+117+118)/20
    3-1/2
    13068/1+1/7*1/7

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