б) $$\frac{3^{11} \cdot 27}{9^6} = \frac{3^{11} \cdot 3^3}{(3^2)^6} = \frac{3^{11+3}}{3^{2\cdot6}} = \frac{3^{14}}{3^{12}} = 3^{14-12} = 3^2 = 9$$.
Ответ: 9