I prefer to think of it as "How many 5% lifts do I need to hit this revenue target?" You only need 72. That's totally doable, and that assumes you don't ever have something more effective like a new product, business model change, price increase, etc.
I truly enjoy this series. It gives genuine insight into today's companies (i.e. not a Microsoft or Apple) and offers real advice that startups can act on right now.