$$ \frac{7}{9} + \frac{5}{8} : \frac{9}{32} = \frac{7}{9} + \frac{5}{8} \cdot \frac{32}{9} = \frac{7}{9} + \frac{5 \cdot 4}{9} = \frac{7}{9} + \frac{20}{9} = \frac{27}{9} = 3 $$
Ответ: 3