2 × (3 × 4.5 + 3 × 4.5) + 3 × 3
    2 × (10 × 4 + 10 × 6 + 6 × 4)
    2 × (14 × 8 + 14 × 30 + 8 × 30)
    2 × (14 × 5 + 14 × 6 + 6 × 5)
    2 × 2 × (25×20 + 25×10 + 20×10)
    2 × (30×25 + 25×20 + 30×20)
    81391.9*40000/(126584759.83+40000)*4.69-40000*0.003
    800000*40000/(126584759+40000)*4.69-40000*0.003
    81391.9 * 9765 / ( 126584759.83 + 9765 ) * 4.69 - 9765 * 0.003
    (81391.9+17.271) * 9765 / ( 126584759.83 + 9765 ) * 4.69 - 9765 * 0.003
    3/(cos(3π/4))^2
    1/(cos(3π/4))^2
    1/（cos(3π/4)）^2
    5*10/(5+10)*5-10*0.002
    10*10/(10+10)*10-10*0.002
    10/10(10+10)*10-10*0.002
    {[1.5*10^8-(7.7659*10^7+6.7695*10^7)]/(7.7659*10^7+6.7695*10^7)}*{[706-2*(10+1)]/(10+1)}
    ((1.5*10^8-(7.7659*10^7+6.7695*10^7))/(7.7659*10^7+6.7695*10^7))*((706-2*(10+1))/(10+1))
    ｛[1.5*10^8-(7.7659*10^7+6.7695*10^7)]/(7.7659*10^7+6.7695*10^7)｝*{[706-2(10+1)]/10+1}
    ｛[1.5*10^8-(7.7659*10^7+6.7659*10^7)]/(7.7659*10^7+6.7659*10^7)｝*{[706-2(10+1)]/10+1}

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