0.145985401=x/(x+120)
    3=x/(x+2)
    X*0.15+2000=X*0.36
    1=x/(x+2)
    X*0.15+2000=X/0.36
    X^3-2X^2=144
    x-12x^4-74x^3-152x^2-104x=0
    (8500+20+X)*(5.32574%+1.5%)*1/4=X
    -x^3+17x^2-67x-38
    -x^2+13x-40
    -x^2+13x-40
    arctan(x)+arctan(2*x)=4/π
    90=arctan(x)+arctan(2*x)
    -4114150+3000000+x-450000-x*10%/4=3000000
    2/x+3-6/x-8=3/2x+1-1
    -4114150+300000+x-450000-x*10%/4=300000
    X*2.7%=1700000
    x = 0.15x+38613.72+445.05+0.0672x
     x = 0.15x+40041.72+457.19+0.0672x
    x=0.15x+40041.72+680.71+0.0672x

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