William Miller and the Day Year Principle

William Miller came up with his own ideas about religion and he based his belief on Daniel 814. Until 2300 days then shall the sanctuary be cleansed. Naturally he assumed the cleansing was a great fire when Christ returned. He also having been educated he knew math. Was itself taught math? Yeah it was yeah. Two plus twos whatever I want. By the way knowing math in the early 1800s America you're basically Gandalf.