1. 수의 표현

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<html>
<head>
	<title></title>
</head>
<body>
<script type="text/javascript">
	alert(1);
</script>
</body>
</html>

<html>
<head>
	<title></title>
</head>
<body>
<script type="text/javascript">
	alert(1.1+1.2);
</script>
</body>
</html>

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