Basic math operators

<html>

 <head><title>Basic math operators</title></head>
 
<body>

 <?php

 $a = 5;
 $b = 3;
 
 echo ('a + b = ' . ($a + $b) . '<br>');
 echo ('a - b = ' . ($a - $b) . '<br>');
 echo ('a * b = ' . ($a * $b) . '<br>');
 echo ('a / b = ' . ($a / $b) . '<br>');
 echo ('a % b = ' . ($a % $b));

 ?>

 </body>
 </html>