Dividing Fractions

Question 1:

\frac{18}{55} \div \frac{4}{5}

\frac{{}^{9}18}{{}_{11}55} \times \frac{5^{1}}{4_{2}} = \frac{9}{22}

Question 2:

\frac{2}{21} \div \frac{4}{7}

\frac{{}^{1}2}{{}_{3}21} \times \frac{7^{1}}{4_{2}} = \frac{1}{6}

Question 3:

\frac{20}{63} \div \frac{55}{81}

\frac{{}^{4}20}{{}_{7}63} \times \frac{81^{9}}{55_{11}} = \frac{36}{77}

Question 4:

\frac{6}{49} \div \frac{27}{56}

\frac{{}^{2}6}{{}_{7}49} \times \frac{56^{8}}{27_{9}} = \frac{16}{63}