imc

We can synchronously multiply $2^3$ to the expresions both above and below the fraction bar. Thus, $$\begin{gathered} \frac{2^3+2^3}{2^{-3}+2^{-3}} \\ =\frac{2^6+2^6}{1+1} \\ =2^6. \end{gathered}$$ Hence, the fraction equals to $\boxed{64}$.