jQuery Calculation Plugin: Summing subtotals to create grand total
<p>I am working with the <a href="http://www.pengoworks.com/workshop/jquery/calculation/calculation.plugin.htm" rel="nofollow">jQuery Calculation Plugin</a> on a page where  I do quantity x price calculations that then add to a subtotal.  This is repeated 4 times.</p>

<p>Each set of 4 involve fields with different ids and differing calculations (more than just price x qty).  </p>

<p>The id's of the 4 subtotal fields are subtotal_events, subtotal_raffle, subtotal_sdc, subtotal_late.</p>

<p>In addition to displaying the individual subtotals, I need to display a "grand total"...a total of the subtotals.</p>

<p>In the fiddle referenced below, I've hard-coded the values of two of the 4 subtotals.    </p>

<p>I've also created a function recalc3, which is currently producing the NaN in the #grandtotal span.  The value should be $70 based upon the hard-coded subtotals, even if no tours or extra tickets are ordered.</p>

<p>Hours of reading posts and trial and error aren't getting me any closer, so any help with achieving the goal is very much appreciated. </p>

<p>Here's the fiddle: <a href="http://jsfiddle.net/sadiem/7spHt/" rel="nofollow">http://jsfiddle.net/sadiem/7spHt/</a></p>
