<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>media</title>
</head>
<body>
<script>
document.write((200 + 100 + 300 + 400)/4);
</script>
</body>
</html>
