JSFiddle - React, Tailwind, and code Playground

HTML

<select name="select">
    <option value="1">1</option>
    <option value="2">2</option>
    <option value="3">3</option>
</select>
<input name="radio" type="radio" id="radio" value="10" />
<input name="radio" type="radio" id="radio" value="20" />
<label id="Total"></label>


<input name="amazon25" type="hidden" id="amazon25" value="3150">
<input name="cash25" type="hidden" id="cash25" value="25">
<label id="amazon25totalpoints"></label>
<label id="amazon25totalcash"></label>

<input name="amazon50" type="hidden" id="amazon50" value="5900">
<input name="cash50" type="hidden" id="cash50" value="50">
<label id="amazon50totalpoints"></label>
<label id="amazon50totalcash"></label>

JavaScript

$("input[type=radio][name=radio]").click(function() {
    var quantity = parseFloat($(this).val());
    var amazon5= parseFloat($('#amazon5').val());
    var cash5 = parseFloat($('#cash5').val());
    var radio = $(this).val();  
    var select = parseFloat($('#select').val());
    
    $('#Total').text((select * radio * amazon5)); 
    
});