Mathematics
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    arcsin2/1
    1/6.3+1
    6.3/1+1
    6.3/1+1/16.1
    (176,30)
    [45,126]
    1/2+1/9526-1/3
    2^3^2 (2^3)^2 2^(3^2)
    sin60 cos30
    sin(π/3) cos(π/6)
    tan45
    e3
    ln3
    (176,30)
    0.08*0.18
    7508/91619
    7508/91619*31.4%-7.7%/1+31.4%
    7508/91619*1+31.4%/31.4%-7.7%
    1+31.4%
    31.4%-7.7%

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