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$(".t706__product-amount.t-descr.t-descr_sm").each(function(i, el) {
var num = (el.textContent.replace(/[^0-9.]/g, "") || 0) * 0.8;
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$(el).after(`<div class="t706__product-amount-sale">${txt} р.</div>`)
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<div class="t706__cartwin-products">
<div class="t706__product" data-cart-product-i="0">
<div class="t706__product-thumb">
<div class="t706__product-imgdiv" style="background-image:url(https://static.tildacdn.com/tild3632-3963-4232-b737-393335343436/903417_S.jpg);">
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<div class="t706__product-title t-descr t-descr_sm">Elizavecca Milky Piggy Hell-Pore Longolongo Gronique Gold Mask Pack<div style="opacity:0.7;font-size:12px;font-weight:400;">903417</div>
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<div class="t706__product-plusminus t-descr t-descr_sm">
<span class="t706__product-minus">
<img src="https://static.tildacdn.com/lib/linea/c8eecd27-9482-6c4f-7896-3eb09f6a1091/arrows_circle_minus.svg" style="width:16px;height:16px;border:0;"></span>
<span class="t706__product-quantity">3</span><span class="t706__product-plus"><img src="https://static.tildacdn.com/lib/linea/c47d1e0c-6880-dc39-ae34-521197f7fba7/arrows_circle_plus.svg" style="width:16px;height:16px;border:0;"></span>
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<div class="t706__product-amount t-descr t-descr_sm">3 861 р.</div>
<div class="t706__product-del"><img src="https://static.tildacdn.com/lib/linea/1bec3cd7-e9d1-2879-5880-19b597ef9f1a/arrows_circle_remove.svg" style="width:20px;height:20px;border:0;">
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<div class="t706__product" data-cart-product-i="1">
<div class="t706__product-thumb">
<div class="t706__product-imgdiv" style="background-image:url(https://static.tildacdn.com/tild6130-6561-4633-a631-306663633061/904117_S.jpg);">
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<div class="t706__product-title t-descr t-descr_sm">Elizavecca Milky Piggy Vitamin C 21% Ample Mask<div style="opacity:0.7;font-size:12px;font-weight:400;">904117</div>
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<div class="t706__product-plusminus t-descr t-descr_sm"><span class="t706__product-minus"><img src="https://static.tildacdn.com/lib/linea/c8eecd27-9482-6c4f-7896-3eb09f6a1091/arrows_circle_minus.svg" style="width:16px;height:16px;border:0;"></span><span class="t706__product-quantity">1</span><span class="t706__product-plus"><img src="https://static.tildacdn.com/lib/linea/c47d1e0c-6880-dc39-ae34-521197f7fba7/arrows_circle_plus.svg" style="width:16px;height:16px;border:0;"></span>
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<div class="t706__product-amount t-descr t-descr_sm">1 320 р.</div>
<div class="t706__product-del"><img src="https://static.tildacdn.com/lib/linea/1bec3cd7-e9d1-2879-5880-19b597ef9f1a/arrows_circle_remove.svg" style="width:20px;height:20px;border:0;">
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