8) \(2\frac{11}{36} : \left(1\frac{3}{27}+3\frac{10}{20}\right)\)

1. \(1\frac{3}{27}=1\frac{1}{9}\), \(3\frac{10}{20}=3\frac{1}{2}\).
2. \(1\frac{1}{9}+3\frac{1}{2}=4\frac{11}{18}=\frac{83}{18}\).
3. \(2\frac{11}{36}=\frac{83}{36}\).
4. \(\frac{83}{36}:\frac{83}{18}=\frac{83}{36}\cdot\frac{18}{83}=\frac{1}{2}\).

Ответ: \(\frac{1}{2}\).