8 16 11 77

\[ \frac{8}{11} \div \frac{16}{77} = \frac{8}{11} \cdot \frac{77}{16} = \frac{8 \cdot 77}{11 \cdot 16} = \frac{616}{176} = \frac{7}{2} = 3\frac{1}{2} \]

Ответ: \(3\frac{1}{2}\)