<script></script>
<script>
var $total = $('#usertotal');
$('input,select').change(function () {
var tot = 0;
$('input:checkbox:checked, select > option:selected').each(function () {
var per_op = $(this).attr('value');
if (per_op) {
tot += Number(per_op);
}
});
var final_result = tot.toFixed(2);
$total.html(final_result)
$('input[name="usertotal"]').val(final_result);
});
</script>