It should take around 5-9 hours, depending on how lucky you are. The loading bar you see in the thumbnail takes around an eon. How it works: 1. The very top layers that has reached 0 will be deleted 2. New layers of random numbers (sometimes in the thousands mark) will be added based on random chance (the random chance is based on how many layers there are). 3. The very top layer will be decreased by 1.