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<!DOCTYPE html>
<html>
<head>
<meta name="description" content="Using a simple callback function to perform equally simple calculation functions">
  <meta charset="utf-8">
  <title>Callback: Calculator</title>
</head>
<body>
  <a href="http://metasean.jsbin.com/yohazo/edit?js,console">http://metasean.jsbin.com/yohazo/edit?js,console</a>
</body>
</html>
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metaseanpro
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