title: Always NAN as result in adding two values in Jquery
body: <p>Im having a hard time trying to find way/possible reason(s) of getting always NaN value of this formula and dont know why.. Here's my code:</p>
  
  <pre><code>var ebit = +$("#totalBillableAmount").text() - +$("#estCostPerDay").text();
  alert(ebit);
  </code></pre>
  
  <p>Output: NaN</p>
  
  <p>I also tried this code</p>
  
  <pre><code>var ebit = +parseFloat($("#totalBillableAmount").text()) - +parseFloat($("#estCostPerDay").text());
      alert(ebit);
      $("#estEbitPerDay").append(ebit);
  
     $("#totalBillableAmount").text()= "2,013.700";
     $("#estCostPerDay").text() = "5,557.82"; 
  </code></pre>
  
  <p>Output: -3</p>
  
  <p>Please Help !</p>