<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Document</title>
</head>
<body>
<h1>Valutan i kronor</h1>
<?php
$dollar = $_POST['currency'];
$sek = $dollar * 11;
echo "<p>$dollar $ = $sek kr</p>";
?>
</body>
</html>