5*\frac{2}{3}=\frac{5*2}{3}=\frac{10}{3}=3\frac{1}{3}
3*\frac{9}{20}=\frac{3*9}{20}=\frac{27}{20}=1\frac{7}{20}
\frac{3}{5}*7=\frac{3*7}{5}=\frac{21}{5}=4\frac{1}{5}
\frac{6}{13}*7=\frac{6*7}{13}=\frac{42}{13}=3\frac{3}{13}
\frac{8}{9}*5=\frac{8*5}{9}=\frac{40}{9}=4\frac{4}{9}