(1+sin52)/(1-sin52)
    0.88+0.048+0.00034+0.0082+0.0125+0.046+0.0012
    (0.0032×44.0098)/17.153
    (0.0067×31.9988)/17.153
    (0.0032×1.9771)/17.153
    (0.0001×58.124)/17.153
    (0.0004×58.124)/17.153
    (0.0186×44.097)/17.153
    (0.0264×30.07)/17.153
    (0.9446×16.043)/17.153
    0.9446×16.0430+0.0264×30.07+0.0186×44.097+0.0004×58.124+0.0001×58.124+0.0032×44.0098+0.0067×31.9988=
    (0.9446×16.043)/3.514
    0.9427×16.043+0.0314×30.07+0.014×44.097+0.0016×58.124+0.0003×58.124+0.0059×44.01+0.0043×28.0134=
    0.09446×16.0430+0.0264×30.07+0.0186×44.097+0.0004×58.124+0.0001×58.124+0.0032×44.0098+0.0067×31.9988=
    0.9446×0.7174+0.0264×1.3553+0.0186×2.0102+0.0004×2.6912+0.0001×2.703+0.0032×1.9771+0.0067×1.2504=
    1+sin55/1-sin55
    20*（lg25-lg(2.74)-lg(0.274)-lg(0.548)）
    2+4%751.2
    1-e^（-0.8）×2.12
    (9.372-8.488)/8.488

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