JSFiddle - React, Tailwind, and code Playground

HTML

<input type="text" id="prob">  
<br>  

<input type="button" id="add" value="Add">  <br>  
<p id='ansspace'></p>

JavaScript

$('#add').on('click', function() {
    var solution = eval($('#prob').val());
    $('#ansspace').html(solution);
});