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    2/3×14.4×(2×8.16+184.27)/(8.16+184.27)
    ((8.16+184.27)×14.4)/2
    (741.21×11.59)/(773.85×7.23)=
    (4.63×0.2+749.33×7.27)/(4.63+827.81)
    (4.63×0.2+827.81×7.27)/(4.63+827.81)
    1/2×150.51×11.0
    (1395.94×12.48)/(1421.54×10.004)
    (4.63×1.05+1395.94×10.004)/(1395.94+4.63)
    2/3×14.4×(2×8.16+185.72)/(8.16+185.72)
    ((8.16+185.72)×14.4)/2
    (464.72×10.68)/(423.21×9.93)
    (441.35×10.68)/(423.21×9.93)
    (11.1×1.05+410.28×10.18)/(410.28+11.1)
    ((8.16+187.21)×4.2)/2=
    (33.1×9.5×2.145+16×2.67)/(33.10×6+20)
    ((2×4.5+0.8×15.9)×7.41)/((6.3-0.5)×10)=
    ((2×4.5+0.8×15.4)×7.41)/((6.3-0.5)×10)
    ((2×4.5+0.8×15.5)×7.41)/((6.3-0.5)×10)
    (22.44×5.3×2.145+16×2.67)/(22.44×6)
    (22.44×5.3×2.145+16×2.67)/(22.44×13)

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