You just need to understand that as long as the business is moving and there are still gamblers who continue to play using the site you will continue to earn your share, the sample calculations will be used as reference though the actual will be on the site and the team who offer this revenue share for all the investors.
Understanding the concept and continue doing business by playing and bringing your friends to play will help if you are also an investor who's willing to take the long road.
That is also the beauty of the concept in fact as you need to keep playing to keep getting the same daily dividend. I recently exchanged my dividends (around 10$) for BFG tokens so that boosted a bit my daily dividends that I am right now receiving.