Machine Problem

Write a program that uses ng-bind directive that will accept three numbers, and then the program will compute the sum of three numbers, and display the results on the screen.

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<!-- index.htm
  Author   : Prof. Jake Rodriguez Pomperada, MAED-IT, MIT
  Date     : July 29, 2021 Thursday  5:56 PM
  Place    : Bacolod City, Negros Occidental
  Websites : and
  Email    :
  <title>Addition of Three Numbers Using ng-bind in AngularJS</title>
body {
  font-family: arial;
  font-size: 25px;
  font-weight: bold;
<script type="text/javascript" src="angular.min.js">

       var app = angular.module("addition", []);
        app.controller('app', ['$scope', function ($app) {
         $app.add= function () {
                $app.sum = 0;
                $app.sum = ($app.val_1 + $app.val_2 + $app.val_3);
                $app.display = $app.sum + ".";
<div ng-app="addition" ng-controller="app">
  <table border="0" cellspacing=10>
  <tr>Addition of Three Numbers Using ng-bind in AngularJS</tr>
  <td>Enter First Value </td>
  <td><input type="number"  ng-model="val_1" ng-change="add()"></td>
  <td>Enter Second Value </td>
  <td><input type="number"  ng-model="val_2" ng-change="add()"></td>
  <td>Enter Third Value </td>
  <td><input type="number"  ng-model="val_3" ng-change="add()"></td>
  <span>The sum of {{val_1}}, {{val_2}}, and {{val_3}} is </span> 
    <span ng-bind="display"></span>