0.000092/(0.5-0.000092)(0.5-0.000092*0.5)^0.5
    9.781.07×1.09×70%×90%
    163×1.07×1.09×20%
    (163+24.45-18-20×1.05)×107×1.09
    163×6%
    163×159
    27+500×48010000+350×33010000×1.07×1.09
    (27500×48010000350×32010000×107×1.09
    (12+454)×107×1.09
    -【415+(2445-9.78)5+978×30%+20×1052】×1.07×1.09×90%38.0214
    （500×480-350×330+200×280)1000
    【415+(2445-9.78)5+978×30%+20×1052】×1.07×1.09×90%38.0214
    500×480-350×330+200×280
    (500×480-350×330+200×280)1000
    2100÷12.233+120-70×0.021÷12.233
    10×0.19+10×0.286+8×0.238+6×0.095+6×0.143+7×0.048
    10×0.19+10×0.286+8×0.238+6×0.095+6×0.1487×0.048 8×0.19+7×0.286+9×0.238+9×0.095+8×0.143+9×0.048 7×0.19+6×0.286+10×0.238+10×0.095+10×0.143+10×0.048
    2×19.5+70
    2×12.5+90
    24.5×60%-5×40%

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