title: Decimal money format
body: <p>how to convert all numbers to xx,xx decimal format without exploding number or string?
  like;</p>
  
  <pre><code>8,9 --&gt; 8,90
  
  8,99 --&gt; 8,99
  
  12,1 --&gt; 12,10
  
  129,9 --&gt; 129,90
  </code></pre>
  
  <p>any idea?</p>