（x-x/1.13*0.13+0.011）/7.24=0.5020
    （x-x/1.13*0.13+0.011）/7.24=0.5122
    （x-x/1.13*0.13+0.011）/7.24=0.0771
    ((X-X/1.13*0.13)+0.011)/7.24=0.32
    ((X-X/1.13*0.13)+0.011)/7.24=0.73
    ((X-X/1.13*0.13)+0.011)/7.24=0.3181
    ((X-X/1.13*0.13)+0.011)/7.24=0.502
    ((X-X/1.13*0.13)+0.011)/7.24=0.07
    ((X-X/1.13*0.13)+0.011)/7.24=
    （X-X/1.13*0.13+0.011)/7.24=
    （X-X/1.13*0.13+0.011)=0.07
    (X*1.5%)+X=247841.77
    (X*1.5%)+ (247841.77-X)=247841.77
    (X*1.5%)+ 247841.77-X=247841.77
    （247841.77-（X*1.5%））+(X*1.5%)=247841.77
    （247841.77-X*1.5%）+(X*1.5%)=247841.77
    1+x^2=2x^2
    9x^-20x+4=0
    150=x+0.25x
    x-0.064x=12

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