Mathematics
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    12÷(4÷3)=
    3×1+1
    abs-3
    10e-2
    1=x^2-3x+1
    x^(2)-2x=2x+1
    x^(2)
    (X-40-20)*(1-20%)/800 = (X-40-45)*(1-20%)/800
    arctg0.707
    (1234567890^12345678901234567890)%9999999999
    1.9*16+(16-16)*6.65+(44-16)*4.2
    19+6*6.65+(44-16)*4.2
    30.4+44*4.2 6.65*16+(44-16)*4.2
    (x+x*0.01)*2450=53900
    (2000x12x0.9-70%x120Xx7.1%)÷(30%x120X+5%x120X)= 3.8%
    64/0.6
    32+0.6*16*6 16*6
    32+0.6*16*5 16*5
    32+0.6*17*5 16*5+0.6*5*(17-16)
    32+0.6*17*5 16*x+0.6*5*(17-16)

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