title: How to convert a scientific notation string to decimal notation?
body: <p>I'd like to <code>find</code> and <code>convert</code> all scientific notation strings in a csv file to decimal notation, e.g.:</p>
  
  <pre><code>1.0e-05 to 0.00001
  </code></pre>
  
  <p>How can I do that in ruby?</p>