Найди частное: a) 5/4 : 2

a) $\frac{5}{4} : 2 = \frac{5}{4} \cdot \frac{1}{2} = \frac{5}{8}$ б) $\frac{2}{3} : \frac{8}{9} = \frac{2}{3} \cdot \frac{9}{8} = \frac{18}{24} = \frac{3}{4}$ в) $\frac{64}{131} : \frac{32}{52} = \frac{64}{131} \cdot \frac{52}{32} = \frac{2 \cdot 52}{131} = \frac{104}{131}$ г) $\frac{64}{125} : 4 = \frac{64}{125} \cdot \frac{1}{4} = \frac{16}{125}$ д) $9 : \frac{3}{4} = \frac{9}{1} \cdot \frac{4}{3} = \frac{36}{3} = 12$ е) $9 : 4 = \frac{9}{4} = 2\frac{1}{4}$ ж) $3\frac{1}{7} : 1\frac{1}{14} = \frac{22}{7} : \frac{15}{14} = \frac{22}{7} \cdot \frac{14}{15} = \frac{22 \cdot 2}{15} = \frac{44}{15} = 2\frac{14}{15}$ з) $2\frac{1}{3} : 7\frac{1}{9} = \frac{7}{3} : \frac{64}{9} = \frac{7}{3} \cdot \frac{9}{64} = \frac{7 \cdot 3}{64} = \frac{21}{64}$