8) 1 2/9 · 2 3/4 =

\(1\frac{2}{9}=\frac{11}{9}\), \(2\frac{3}{4}=\frac{11}{4}\).

\(\frac{11}{9}\cdot\frac{11}{4}=\frac{121}{36}=3\frac{13}{36}\).

Ответ: 3\(\frac{13}{36}\)