Multiplying Fractions

Question 1:

\frac{9}{77} \times \frac{7}{18}

\frac{{}^{1}9}{{}_{11}77} \times \frac{7^{1}}{18_{2}} = \frac{1}{22}

Question 2:

\frac{16}{63} \times \frac{7}{24}

\frac{{}^{2}16}{{}_{9}63} \times \frac{7^{1}}{24_{3}} = \frac{2}{27}

Question 3:

\frac{72}{77} \times \frac{49}{80}

\frac{{}^{9}72}{{}_{11}77} \times \frac{49^{7}}{80_{10}} = \frac{63}{110}

Question 4:

\frac{8}{15} \times \frac{3}{32}

\frac{{}^{1}8}{{}_{5}15} \times \frac{3^{1}}{32_{4}} = \frac{1}{20}