handle_calc2.php

<!doctype html>
<html lang="en">
<head>
	<meta charset="utf-8">
	<title>Product Cost Calculator</title>
	<style type="text/css">
		.number { font-weight: bold; }
	</style>
</head>
<body>
<?php

$price = $_POST['price'];
$quantity = $_POST['quantity'];
$discount = $_POST['discount'];
$tax = $_POST['tax'];
$shipping = $_POST['shipping'];
$payments = $_POST['payments'];

$total = $price * $quantity;
$total = $total + $shipping;
$total = $total - $discount;
$total = number_format($total,2);

$taxrate = $tax / 100;
$taxrate = $taxrate + 1;

$total = $total * $taxrate;

$monthly = $total / $payments;
$monthly = number_format($monthly,2);

print "<p>You have selected to purchase:<br>
<span class=\"number\">$quantity</span> widget(s) at <br>
$<span class=\"number\">$price</span> price each plus a <br>
$<span class=\"number\">$shipping</span> shipping cost and a <br>
<span class=\"number\">$tax</span> percent tax rate.<br>
After your $<span class=\"number\">$discount</span> discount, the total cost is 
$<span class=\"number\">$total</span>.<br>
Divided over <span class=\"number\">$payments</span> monthly payments, that would be $<span class=\"number\">$monthly</span> each.</p>";

?>
</body>
</html>