Index: views_field_calc.module
===================================================================
--- views_field_calc.module	(revision 4418)
+++ views_field_calc.module	(working copy)
@@ -56,6 +56,7 @@
   foreach ($arr as $value) {
     $total = $total + $value;
   }
+  if(strpos( $value, "." ) !== TRUE) $total = number_format($total, 2, '.', '');
   return $total;
 }