Mathematics
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    550*5
    1350*2
    e^(-0.0000000000234÷0.9÷3.86÷3.86)
    e^(0.0000000000234÷0.9÷3.86÷3.86)=
    0.75+1/4
    0.75+4/1
    365091.54/(1+6%)*6.72%=
    0.5*π-arctan0.859-arctan0.4295
    0.5π-arctan0.859-arctan0.4295
    (12)e3*e4+432
    (12)3*64+432
    A(7,3)*(sqrt(140+2^3-2*2*2^2+12)-abs(87-9*2^0)+!(3))/C(5,2)-lg(100)*(ln(e^13)-sin105+cos45)/tan60
    π/e 7/2e
    (27/8)^(2/3)
    -2540.8*0.067^5 + 2940.8*0.067^4 - 1331.2*0.067^3 + 299.21*0.067^2 - 35.312*0.067 + 3.2917
    0.2623/(86.35433-26.23)
     1.13-(((0.6054-0.2623)/0.2623)*0.004*1.13/0.01)
    1.13-(((0.799043-0.2623)/0.2623)*0.004*1.13/0.01)
     1.98-(((0.799043-0.2623)/0.2623)*0.004*1.98/0.01)
     1.13-(((0.8635433-0.2623)/0.2623)*0.004*1.13/0.01)

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