Mathematics
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    e-70
    2+3
    【21.78-0.101×16]×162,5
    arctan(5/π)
    3+7
    3640000/(0.98×30460)
    5/3*120
    tan(arccos0.8)-tan(arccos0.92)
    tan(arccos0.85)-tan(arccos0.92)
    tan(arccos0.74)-tan(arccos0.92)
    !(5)
    8026.00-662.70-74.72-4.00-12.77-59.58-7.41-80.26
    (8026.00-662.70-74.72-4.00-7242.00)×30%
    (8026.00-662.70-74.72-4.00-7242.00)÷(74.72+4.00+7242.00)
    (8026.00-662.70-74.72-4.00-7242.00)÷(74.72+4.00+7242.00)×100%
    10lg(1/16(13.33×10^7.5+4×10^7−1.33×10^6))=
    10lg(13.33×10^7.5+4×10^7−1.33×10^6)=
    tan(arccos0.74)-tan(arccos0.92)
    129.30+85.00+39.50+9.19+25.38+34.60
    129.30+85.00+39.50+9.19+25.38+34.60

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