The regional manager of a chain of department stores created the following stem-and-leaf plot showing the number of pairs of boots at each of the stores: $ \left| \quad \begin{matrix} 0 \vphantom{\Large{0}} \\ 1 \vphantom{\Large{0}} \\ 2 \vphantom{\Large{0}} \\ 3 \vphantom{\Large{0}} \\ 4 \vphantom{\Large{0}} \\ 5 \vphantom{\Large{0}} \\ 6 \vphantom{\Large{0}} \\ \end{matrix} \quad \right| \quad \begin{matrix} \vphantom{\Large{0}} \\ 7&8& \vphantom{\Large{0}} \\ 0&5&8& \vphantom{\Large{0}} \\ 4&4&7&8& \vphantom{\Large{0}} \\ 0& \vphantom{\Large{0}} \\ \vphantom{\Large{0}} \\ \vphantom{\Large{0}} \\ \end{matrix} $ ** How many department stores have fewer than $60$ pairs of boots? ** [[☃ numeric-input 1]] department stores