\(\frac{\sqrt{11} \cdot \sqrt{35}}{\sqrt{7} \cdot 55} = \frac{\sqrt{11 \cdot 35}}{\sqrt{7} \cdot 55} = \frac{\sqrt{385}}{\sqrt{7} \cdot 55} = \frac{\sqrt{7 \cdot 55}}{\sqrt{7} \cdot 55} = \frac{\sqrt{7} \cdot \sqrt{55}}{\sqrt{7} \cdot 55} = \frac{\sqrt{55}}{55}\). Ответ: \(\frac{\sqrt{55}}{55}\).