svileff,
<script>
$(function() {
$("[href = '#order'], .t706__carticon-wrapper").click(function() {
function numberWithCommas(str) {
return (+str).toFixed(0).replace(/(\d+)(\.\d+)?/g, function(c, b, a) {
return b.replace(/(\d)(?=(\d{3})+$)/g, "$1 ") + (a || "")
})
}
$(".t706__product-amount.t-descr.t-descr_sm").each(function(i, el) {
var num = (el.textContent.replace(/[^0-9.]/g, "") || 0) * .8;
var txt = numberWithCommas(num);
$(el).after('<div class="t706__product-amount-sale">' + txt + " \u0440.</div>")
})
})
});
</script>