title: parseFloat returns NaN
body: <p>I'm trying to get rid of currency sign in order to calculate new price using parseFloat, but it returns nan for some reason.</p>
  
  <pre><code>var pricePerUser = "£19.99";
  pricePerUser = parseFloat(pricePerUser) * 3;
  console.log(pricePerUser); //Returns NaN
  </code></pre>