title: Using the text replaced in the replace text
body: <p>I'm using the version 7.3.3 of Notepad++.</p>
  
  <p>I have this list of numbers to 1.000.000.</p>
  
  <pre><code>1
  2
  3
  4
  5
  6
  7
  8
  9
  10
  11
  12
  13
  14
  </code></pre>
  
  <p>I want to add XML tags to these numbers like this:</p>
  
  <pre><code>&lt;SerialNumber&gt;
      &lt;SN&gt;1&lt;/SN&gt;
  &lt;/SerialNumber&gt;
  &lt;SerialNumber&gt;
      &lt;SN&gt;2&lt;/SN&gt;
  &lt;/SerialNumber&gt;
  &lt;SerialNumber&gt;
      &lt;SN&gt;3&lt;/SN&gt;
  &lt;/SerialNumber&gt;
  &lt;SerialNumber&gt;
      &lt;SN&gt;4&lt;/SN&gt;
  &lt;/SerialNumber&gt;
  </code></pre>
  
  <p>So I need a regular expression to find a number ended with a <code>\n\r</code>, and use the number I've found with the regular expression in the text that I'm going to add.</p>
  
  <p>Do you know to do that in Notepad++?</p>
  
  <p>I have tried with <code>\d{*}</code> but it is not a valid regular expression.</p>