title: Format numbers with million (M) and billion (B) suffixes
body: <p>I have large numbers, e.g. currency or dollar:</p>
  <pre><code>1 6,000,000
  2 75,000,400
  3 743,450,000
  4 340,000
  5 4,300,000
  </code></pre>
  <p>I want to format them using suffixes, like <code>M</code> (million) and <code>B</code> (billion):</p>
  <pre><code>1 6.0 M
  2 75.0 M
  3 743.5 M
  4 0.3 M
  5 4.3 M 
  </code></pre>