title: String 3 decimal places
body: <h2>Example 1</h2>
  
  <pre><code>Dim myStr As String = "38"
  </code></pre>
  
  <p>I want my result to be <code>38.000</code> ...</p>
  
  <hr>
  
  <h2>Example 2</h2>
  
  <pre><code>myStr = "6.4"
  </code></pre>
  
  <p>I want my result to be <code>6.400</code></p>
  
  <hr>
  
  <p>What is the best method to achieve this? I want to format a <strong>string</strong> variable with atleast <em>three decimal</em> places.</p>