Sum value of elements inside of a div using jquery

Answer 1

Something like this would insert a div containing Total: # after each group:

$(".groupWrapper").each(function() {
  var total = 0;
  $(this).find(".skill").each(function() {
    total += parseInt($(this).text());
  });
  $(this).append($("<div></div>").text('Total: ' + total));
});

You can adjust the markup, etc...just adjust it based on whatever you want to do with the total.