<!DOCTYPE html>
<html>
<head>
<script data-require="angular.js@1.4.8" data-semver="1.4.8" src="https://cdnjs.cloudflare.com/ajax/libs/angular.js/1.4.8/angular.min.js"></script>
</head>
<body ng-app>
  <div ng-init="variable1 = 10; variable2 = 5; variable3='Divided By'">
      {{variable1}} {{variable3}} {{variable2}}: {{variable1/variable2}}
  </div>
</body>
</html>
http://blog.allii.ir/2016/01/angularjs-beginner-intermediate-course-basics/#directives