л) $$2\frac{3}{4} \cdot 3\frac{1}{3} = \frac{11}{4} \cdot \frac{10}{3} = \frac{11 \cdot 10}{4 \cdot 3} = \frac{11 \cdot 5}{2 \cdot 3} = \frac{55}{6} = 9\frac{1}{6}$$
Ответ: $$9\frac{1}{6}$$