\[ \frac{5}{9} \cdot \frac{2}{5} = \frac{5 \cdot 2}{9 \cdot 5} = \frac{10}{45} \]
\[ \frac{10}{45} = \frac{2}{9} \]
\[ \frac{7}{34 \cdot \frac{2}{9}} \]
\[ 34 \cdot \frac{2}{9} = \frac{34 \cdot 2}{9} = \frac{68}{9} \]
\[ \frac{7}{\frac{68}{9}} = 7 \cdot \frac{9}{68} = \frac{7 \cdot 9}{68} = \frac{63}{68} \]
Ответ: 63/68