How to do calculation of two values with commas?
<p>I have two value and I want to do calculation of those values.</p>

<p>For example : </p>

<pre><code>$a = '750,000.00';
$b = '763,000.00';
echo $a + $b;
</code></pre>

<p>and I am getting the result 1513 which is wrong.. The output must be 1513000. </p>

<p>How to do such calculations?</p>
