JSFiddle - React, Tailwind, and code Playground

HTML

<table border="1">
    <tr>
        <th>exe</th>
        <th>coluna2</th>
        <th>coluna3</th>
        <th>coluna4</th>
        <th>coluna5</th>
    </tr>
    <tr>
        <th>linha1</th>
        <td><a href="#">10</a></td>
        <td><a href="#">20</a></td>
        <td><a href="#">15</a></td>
        <td><a href="#">5</a></td>
    </tr>
    <tr>
        <th>linha2</th>
        <td><a href="#">20</a></td>
        <td><a href="#">28</a></td>
        <td><a href="#">12</a></td>
        <td><a href="#">11</a></td>
    </tr>
    <tr>
        <th>linha3</th>
        <td><a href="#">3</a></td>
        <td><a href="#">5</a></td>
        <td><a href="#">2</a></td>
        <td><a href="#">8</a></td>
    </tr>

</table>
<p id="result">Resultado: </p>

JavaScript

$('tr').each(function(i, tr) {
    if (i == 0) return;
    var nome = $(this).find('th').text();
    var valor = $(this).find('td a').get().reduce(function(sum, el) {
        return sum * parseFloat(el.innerHTML);
    }, 1);
    var p = $('<p/>', {
        html: [nome, valor].join(': ')
    });
    $('#result').append(p);
});