Regex: compare lines and find out the different numbers : <p>I have this lines on my html pages (1978 pages).</p>

<blockquote>
  <p><code>&lt;li&gt;&lt;a href="xxx.html" title="xxx"&gt;xxx (22)&lt;/a&gt;&lt;/li&gt;</code></p>
  
  <p><code>&lt;li&gt;&lt;a href="yyy.html" title="yyy"&gt;yyy (21)&lt;/a&gt;&lt;/li&gt;</code></p>
  
  <p><code>&lt;li&gt;&lt;a href="zzz.html" title="zzz"&gt;zzz (13)&lt;/a&gt;&lt;/li&gt;</code></p>
</blockquote>

<p>Somewhere in my files, there is a mistake, but I'm not sure where at thos final numbers. Some numbers are may be different in some pages, but I need the be the same in all pages.</p>

<p>Can anyone give me an idea how to find the html pages that contains a line that has other numbers then all above?</p>
