The value of $$\frac{{7 + 8 \times 8 \div 8\,{\text{of }}8 + 8 \div 8 \times 4\,{\text{of }}4}}{{4 \div 4\,{\text{of }}4 + 4 \times 4 \div 4 - 4 \div 4\,{\text{of}}\,{\text{2}}}}{\text{is:}}$$

$$\eqalign{ & \frac{{7 + 8 \times 8 \div 8\,{\text{of }}8 + 8 \div 8 \times 4\,{\text{of }}4}}{{4 \div 4\,{\text{of }}4 + 4 \times 4 \div 4 - 4 \div 4\,{\text{of}}\,{\text{2}}}} \cr & = \frac{{7 + 8 \times 8 \div 64 + 8 \div 8 \times 16}}{{4 \div 16 + 4 \times 4 \div 4 - 4 \div 8}} \cr & = \frac{{7 + 1 + 16}}{{\frac{1}{4} + 4 - \frac{1}{2}}} \cr & = \frac{{24}}{{\frac{{1 + 16 - 2}}{4}}} \cr & = \frac{{24 \times 4}}{{15}} \cr & = \frac{{32}}{5} \cr & = 6.4 \cr} $$