title: How to get value as type Number on this.formgroup.value()?
body: <p>The value I get on submitting a form group is </p>
  
  <pre><code>{
    "name": "Sunil",
    "age": "23"
  }
  </code></pre>
  
  <p>What I want is </p>
  
  <pre><code>{
    "name": "Sunil",
    "age": 23
  }
  </code></pre>
  
  <p>My form group is as follows in my .ts file</p>
  
  <pre><code>myForm : FormGroup;
  this.myForm = this._formbuilder.group({
    name: [''],
    age: [null]
  });
  </code></pre>