eln0
    （12.59-12.3）/12.3
    459 ×1
    sin58
    sin55
    cos32
    arccos-0.068
    arccos-0.68
    （1+8％）∧0.5
    （1+0.08）∧0.5
    （1+12％）∧0.25
    （1+8％）0.5
    0.00075/0.03
    sin154.383822
    sin0.42884395
    arcsin0.42884395
    -3-8/25-7-3/4+1.52-2.25
    -81/20*2.5*(-8)
    -8/5*(7/32-5/16)*2/5
    -1-(1-0.5)*4/3*(-1/11)

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