A zookeeper created the following stem-and-leaf plot showing the number of tigers at each major zoo in the country: $ \left| \quad \begin{matrix} 0 \vphantom{\Large{0}} \\ 1 \vphantom{\Large{0}} \\ 2 \vphantom{\Large{0}} \\ 3 \vphantom{\Large{0}} \\ 4 \vphantom{\Large{0}} \\ \end{matrix} \quad \right| \quad \begin{matrix} 7& \vphantom{\Large{0}} \\ 1&4&8& \vphantom{\Large{0}} \\ 5&5&5&6&7&7&9& \vphantom{\Large{0}} \\ \vphantom{\Large{0}} \\ \vphantom{\Large{0}} \\ \end{matrix} $ ** How many zoos have more than $13$ tigers? ** [[☃ numeric-input 1]] zoos