title: How to format this international phone number in Rails?
body: <p>If I have an international phone number such as this:</p>
  
  <blockquote>
    <p>0541754301</p>
  </blockquote>
  
  <p>how can I format it to produce something like this:</p>
  
  <blockquote>
    <p>0541-754-301</p>
  </blockquote>