$(document).ready(function () {
    $("input").each(function () {
        $(this).keyup(function () {
            newSum.call(this);


        });
    });
});

function newSum() {
    var sum = 0;
    var thisRow = $(this).closest('tr');

    var total = 0;

    //iterate through each input and add to sum
    $(thisRow).find("td:not(.total) input").each(function () {

        sum += parseInt(this.value);
    });
    //change value of total
    $(thisRow).find(".total").html(sum);


    // the grand total
    $('.total').each(function () {
        total += parseInt($(this).html());
    });

}