final_price = (from1_price + from2_price + from3_price + from4_price + picking_price + insurance_price + exp_cat_price);
$('.calculator #calc_price').text(final_price);
function triplets(str) {
// \u202f — неразрывный узкий пробел
return str.toString().replace(/(\d)(?=(\d\d\d)+([^\d]|$))/g, '$1\u202f');
}
разбить число на разряды с помощью jquery
final_price = (from1_price + from2_price + from3_price + from4_price + picking_price + insurance_price + exp_cat_price);
final_price = final_price.toLocaleString('ru');
$('.calculator #calc_price').text(final_price);