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%
    1+31.4%
    0.082*0.180
    7508/91619
    31.4%-7.7%
    31.4%-7.7%
    arccos（-0.6279）
    arccos（-0.6379）
    arccos0.3
    (577+17.31+130.80)×12%

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