ln(1+x)
    X+2／1
    X*0.8-X/124465503*24893100.6=27686102.48
    X=(10000+2000)*5/4
    x*ln(x)+ln2/2*x=0.2974
    x*ln(x)+ln2*x=0.2974
    30÷(t÷368365.1+e(0.0315×t)÷25.86)+ 905.1×e(-0.0230075×t)- 5172=0
    30/(t/368365.1+e(0.0315*t)/ 25.86)+ 905.1*e(-0.0230075*t)- 5172=0
    0.65*(88+X)=48+19
    30/(t/368365.1+e^(0.0315*t)/ 25.86)+ 905.1*e^(-0.0230075*t)- 5172=0
    4/2333＝（m/342）÷（（（m/342）+（（1000-m）/18））
    1680.9* e^( -0.02527*t)- 5172=0
    0.6*(88+x)=48+x
    30/(t/3108276+e^(0.00841*t)/58.32)+2041.2*e^(-0.010726667*t)-1=0
    30/(t/3108276+e^(0.00841*t)/58.32)+2041.2*e^(-0.010726667*t)-20000000000=0
    30/(t/3108276+e^(0.00841*t)/58.32)+2041.2*e^(-0.010726667*t)-11664=0
    30/(t/3108276+e^(0.00841*t)/58.32)+2041.2*e^(0.010726667*t)-20=0
    30/(t/3108276+e^(0.00841*t)/58.32)+2041.2*e^(0.010726667*t)-11664=0
    10.1-x/0.4=1/5
    （12827*0.0398+X）/（12827-X)=0.1

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