How do I select (highlight) selected result

When I pick the result I want to copy a part of that string. For example: I searched for worker Nick and I got results: Nick Johnson 13944929952, then I click on it and the result is now in my select tag and now I want to copy that number 13944929952 by clicking on it and dragging over it. But I can’t it’s not possible.
Something like this:
image