arctanx+arctan(0.1x）-90
    arctanx+arctan0.1x-90
    (8505+115+X)*（5.36938%+1.2%）*1/4=X
    3.77（0.09-x）(0. 16-x)=0.0154x
    3x一14＝x＋14
    x乘以1.06=650000
    x乘以1.06=650000
    x乘以1.06=620000
    3.77（0.09-x）（0.16-x）=x^2
    3(48-y)-18=y+6
    126-3y=y+6
    1625.60+1625.60*0.03+0.03X+(1625.60+1625.60*0.03+0.03X)*0.0475*2/2+(1625.60+1625.60*0.03+0.03X+(1625.60+1625.60*0.03+0.03X)*0.0475*2/2)*0.2+0.0524X=X
    1625.60+1625.60*0.03+0.03X+(1625.60+1625.60*0.03+0.03X)*0.0475*2/2+(1625.60+1625.60*0.03+0.03X+(1625.60+1625.60*0.03+0.03X)*0.0475*2/2)*0.2+0.0524X
    1625.60+1625.60*0.03+0.03X+(1625.60+1625.60*0.03+0.03X)*0.0475*2/2+(1625.60+1625.60*0.03+0.03X+(1625.60+1625.60*0.03+0.03X)*0.0475*2/2)*0.3+0.0524X=X
    1460.5+1460.50*0.03+0.03X+(1460.50+1460.50*0.03+0.03X)*0.0475*2/2+(1460.50+1460.50*0.03+0.03X+(1460.50+1460.50*0.03+0.03X)*0.0475*2/2)*0.3+0.0524X=X
    1460.5+1460.50*0.03+0.03X+(1460.50+1460.50*0.03+0.03X)*0.0475*2/2+(1460.50+1460.50*0.03+0.03x+(1460.50+1460.50*0.03+0.03X)*0.0475*2/2)*0.2+0.0524X=X
    1460.5+1460.50*0.03+0.03X+(1460.50+1460.50*0.03+0.03X)*0.0475*2/2+(1460.50+1460.50*0.03+0.03x+(1460.50+1460.50*0.03+0.03X)*0.0475*2/2)*0.2+0.0524X
    1460.5+1460.50*0.03+0.03X+(1460.50+1460.50*0.03+0.03X)*0.0475*2/2+(1460.50+1460.50*0.03+0.03X+(1460.50+1460.50*0.03+0.03X)*0.0475*2/2)*0.1+0.0524X
    8642831972857.144=3250357031071.4287 x
    0=-8642831972857.144 + 3250357031071.4287 x

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