\( 2\frac{2}{3} = \frac{2 \cdot 3 + 2}{3} = \frac{8}{3} \)
\( 1\frac{3}{8} = \frac{1 \cdot 8 + 3}{8} = \frac{11}{8} \)
\( \frac{8}{3} : \frac{11}{8} = \frac{8}{3} \times \frac{8}{11} \)
\( \frac{8 \cdot 8}{3 \cdot 11} = \frac{64}{33} \)
\( \frac{64}{33} = 1 \frac{31}{33} \)
Ответ: \( 1\frac{31}{33} \).