How to calculate sum of a custom value

I have a table of products like this:

As I mentioned in the image, I have specified a field called VAT which stands for Value Added Tax and I need the sum of all VAT fields to be showed on page with jQuery, so here is my try:

var total_price =  parseInt($('#total-price').html().replace(/\,/g,''));
$('#total-price').html(parseInt(total_price + (price*cnt)).toLocaleString());

var total_discount =  parseInt($('#total-discount').html().replace(/\,/g,''));
$('#total-discount').html(parseInt(total_discount + (discount*cnt)).toLocaleString());
                
var total_final =  parseInt($('#total-final').html().replace(/\,/g,''));
$('#total-final').html(parseInt(total_final + (price_final*cnt)).toLocaleString());

var total_vat =  parseInt($('#total-vat').html().replace(/\,/g,''));
$('#total-vat').html(parseInt(total_final + (price_final*cnt) + value_added_tax).toLocaleString());

And the result of these variables goes here:

But now the problem is sum of vats returns the same value of total-final. So instead of 12,350,00 it should be showing 13,286,000 (because the sum of value_added_tax must be added to total_final).

And the line that does this calculation goes here:

$('#total-vat').html(parseInt(total_final + (price_final*cnt) + value_added_tax).toLocaleString());

Something is missing here, or I'm doing it in a wrong way. So if you know how to calculate properly the final price of a product (total_final + value_added_tax), please let me know...

I would really appreciate any idea or suggestion from you guys...

Thanks in advance.

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