\(9 \div \frac{3}{7} = 9 \times \frac{7}{3} = 21\)
\(12 \div \frac{3}{4} = 12 \times \frac{4}{3} =16\)
\(\frac{3}{4} \div \frac{1}{12} = \frac{3}{4} \times 12 = 9\)
\(\frac{4}{7} \div \frac{3}{14} = \frac{4}{7} \times \frac{14}{3} = \frac{8}{3} = 2 \frac{2}{3}\)
\(6 \div \frac{3}{5} = 6 \times \frac{5}{3} = 10\)
\(\frac{9}{10} \div \frac{3}{7} = \frac{9}{10}\times \frac{7}{3} = \frac{21}{10} = 2 \frac{1}{10}\)