muzhik,
<!DOCTYPE HTML>
<html>
<head>
<title>Untitled</title>
<meta charset="utf-8">
<script src="http://ajax.googleapis.com/ajax/libs/jquery/1.11.0/jquery.min.js"></script>
<script src="http://aishek.github.io/jquery-animateNumber/javascripts/jquery.animateNumber.js"></script>
<script type="text/javascript">
$(document).ready(function() {
$('#filin').animateNumber({ number: 3500 }, 5000);
});
</script>
</head>
<body>
<div id="filin"></div>
</body>
</html>