((((-3)+(((7))/(((2)-((1/7)^(-1)/7)+(1/3)) )))/(((7/2)^(-2) )-(√((((-(-2)^4 (-4)^(-1) ))/(((-7)^2 (-7)^2 (-1)) )) )))^(-1) )^2 )-((7^2 ((-7)^4 ))+((-1)^3 ))

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