Mathematics
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    4--10
    7+1
    tan19.6
    tan(19.5)
    tan(15)
    28*5%+【0.46/(1+13%)*5%】
    28*5%+【0.46/(1-17%)*5%】
    √7740^2+3910^2
    √2900^2+2030^2
    arctan(2/11)
    arctan2/11
    1-e-0.2
    e0.2
    e-0.2
    e1
    e-0.2
    2*1.3922*(0.473)
    36648.00+1069944.00
    133.743×80%×10000
    4.581×80%×10000

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