title: Convert Exponential to Integer
body: <p>I have the following string: <code>2.200000000000E+09</code></p>
  
  <p>If I do the following:</p>
  
  <pre><code>float.Parse("2.200000000000E+09") = 2.2E+9
  </code></pre>
  
  <p>If I do:</p>
  
  <pre><code>Int64.Parse("2.200000000000E+09")
  </code></pre>
  
  <p>I was expecting:</p>
  
  <pre><code>2200000000
  </code></pre>
  
  <p>Instead I get a format exception so what is the easiest way to get the exponential to integer?</p>