Untitled

<!DOCTYPE html>
<html ng-app = "myApp">

  <head>
    <script data-require="angular.js@*" data-semver="1.3.15" src="https://code.angularjs.org/1.3.15/angular.js"></script>
    <link rel="stylesheet" href="style.css" />
    <script src="script.js"></script>
  </head>

  <body ng-controller="myController">
    testing
    <input type="text" ng-model="field1"/>
    <input type="text" ng-model="field2"/>
    <br />

    Total {{field1*50--field2}}
    
  </body>

</html>

// Code goes here
var app = angular.module('myApp', []);

app.controller('myController', function($scope){
  $scope.field1 = 0;
  $scope.field2 = 0;
});

/* Styles go here */