Discount for each item in the cart. It seems that he did everything, but the final amount is not the same, what is the mistake?

Question

1C-Bitrix

Hello!
I made a free discount in the basket for goods, everything is fine, but when we go to the page, it shows the correct amount:

And when we add the quantity, for example, on the screen of the second product, the amount becomes one product:


I can’t understand what the problem is, somewhere else js I need to edit, maybe someone did something similar, tell me, please.

In the code, if you remove in the array: Then the final amount is considered normal, but without the necessary product discounts. In the mutator.php file, I made changes to the discounts at the top: in foreach
$result['allSum'] += $row['SUM_VALUE'];

$go3sale = "";
  $intElementID = 100; // ID предложения
  $mxResult = CCatalogSku::GetProductInfo($row['PRODUCT_ID']);
  $pid = 0;
  if (is_array($mxResult))
  {
    $pid = $mxResult['ID'];
  }
  else
  {
    $pid = $row['PRODUCT_ID'];
  }


  $iteratorz = CIBlockElement::GetPropertyValues(21, array("ID"=>$pid));
  while ($arFields = $iteratorz->Fetch())
  {
    //var_dump($arFields[198]);
    if($arFields[198] != "")
    {	
      $go3sale = "";
      for($i=0;$i<=count($arFields[198]);$i++)
      {
        if($arFields[198][$i] == "7892"){ $go3sale = "ok";}
      }
    }
  }
  if ($go3sale == "ok"){$allskidos=$com2;}else{$allskidos=$com1;}

  //Скидка
  $row['DISCOUNT_PRICE'] = $row['PRICE'] * $allskidos / 100;
  $row['PRICE'] = $row['PRICE'] - $row['DISCOUNT_PRICE'];
  
  if ($allskidos > 0)
    $row['DISCOUNT_PRICE_PERCENT'] = $allskidos;
  $row['SUM_VALUE'] = $row['PRICE'] * $row['QUANTITY'];

  $result['allSum'] += $row['SUM_VALUE'];

  $row['SUM_DISCOUNT_PRICE'] = $row['DISCOUNT_PRICE'] * $row['QUANTITY'];
  $row['PRICE_FORMATED'] = CCurrencyLang::CurrencyFormat($row['PRICE'], $row['CURRENCY'], true);
  $row['SUM'] = CCurrencyLang::CurrencyFormat($row['SUM_VALUE'], $row['CURRENCY'], true);
  $row['DISCOUNT_PRICE_FORMATED'] = CCurrencyLang::CurrencyFormat($row['DISCOUNT_PRICE'], $row['CURRENCY'], true);
  $row['SUM_DISCOUNT_PRICE_FORMATED'] = CCurrencyLang::CurrencyFormat($row['SUM_DISCOUNT_PRICE'], $row['CURRENCY'], true);

  if ($allskidos > 0)
    $row['DISCOUNT_PRICE_PERCENT_FORMATED'] = $allskidos.'%';

If anyone has a desire to figure it out, I can throw off the mutator.php file, I will be very grateful