<!DOCTYPE hmtl>
<html lang="pt-br">
<head>
<meta charset="utf-8">
<title>calculando_meu_gasto.html</title>
</head>
<body>
<h1></h1>
<script>
document.write((200 + 100 + 300 + 400)/4);
</script>
</body>
</html>
