$$\frac{2}{11} : \frac{4}{77} = \frac{2}{11} \cdot \frac{77}{4} = \frac{2 \cdot 77}{11 \cdot 4} = \frac{2 \cdot 7 \cdot 11}{11 \cdot 2 \cdot 2} = \frac{7}{2} = 3\frac{1}{2}$$
Ответ: 3 1/2