[67Irralphaisa]

Well, If you want to get technical: the money was earned in the early 1800s by her husband's great grandfather John Jacob Astor. Worth the equivalent of over 100 billion dollars at the time of his death.

Brooke Astor was in charge of the Astor Foundation, a philanthropic organization. In other words: she had a job.

And worked well into her 90s.