title: REGEXPR_REPLACE string
body: <p>How to replace <code>&amp;</code> in the below string:</p>
  
  <pre>'extends the functionality <b>&</b> of the <b>&</b> REPLACE function <b>&</b> by'</pre>
  
  <p>with <code>one</code>, <code>two</code> and <code>three</code> respectively.</p>
  
  <p>In the end the result should be:</p>
  
  <pre><code>extends the functionality one of the two REPLACE function three by
  </code></pre>