Solve the following.

\(\frac{0.8\space \times\space 0.8 \space\times\space 0.8 \space-\space 0.7 \space\times\space 0.7 \space\times\space 0.7}{0.8 \space\times\space 0.8 \space+\space 0.56 \space+\space 0.7 \space\times\space 0.7} =\space ?\)