title: How do i format a numeric number to Exponential form in flutter
body: <p>I am trying to format a numeric number to display in exponential form. e.g 140500.45 as 1.4050045E5 using NumberFormat class in Dart. How do i go about this in flutter.
  The following is what i have tried so far;</p>
  
  <pre><code> `NumberFormat  numbFormat = NumberFormat("E", "en_US");
    returnFormat = numbFormat.format(numericNumber);
    print(returnFormat);`
  </code></pre>
  
  <p>Thanks.</p>