a) $(\frac{1}{3})^2 : \frac{4}{9} = \frac{1}{9} : \frac{4}{9} = \frac{1}{9} \cdot \frac{9}{4} = \frac{1}{4}$
б) $(9 - 2\frac{2}{15} : \frac{8}{25}) \cdot \frac{9}{14} = (9 - \frac{32}{15} : \frac{8}{25}) \cdot \frac{9}{14} = (9 - \frac{32}{15} \cdot \frac{25}{8}) \cdot \frac{9}{14} = (9 - \frac{4 \cdot 8}{3 \cdot 5} \cdot \frac{5 \cdot 5}{8}) \cdot \frac{9}{14} = (9 - \frac{4 \cdot 5}{3}) \cdot \frac{9}{14} = (9 - \frac{20}{3}) \cdot \frac{9}{14} = (\frac{27}{3} - \frac{20}{3}) \cdot \frac{9}{14} = \frac{7}{3} \cdot \frac{9}{14} = \frac{7 \cdot 3 \cdot 3}{3 \cdot 2 \cdot 7} = \frac{3}{2} = 1.5$
Ответ: a) $\frac{1}{4}$, б) $1.5$
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