title: beautiful soup just get the value inside the tag
body: <p>The following command:</p>
  
  <pre><code>volume = soup.findAll("span", {"id": "volume"})[0]
  </code></pre>
  
  <p>gives:</p>
  
  <pre><code>&lt;span class="gr_text1" id="volume"&gt;16,103.3&lt;/span&gt;
  </code></pre>
  
  <p>when I issue a print(volume).</p>
  
  <p>How do I get just the number?</p>