Treblinka was open from July 23, 1942, to October 19, 1943.
That's 453 days... that's 10,872 hours.
900,000/453 = 2,000 jews were gassed AND cremated PER DAY if it was magically running 24 hours a day 7 days a week while Germany was fighting for it's life in a 3-front world war.
4,000 gassings AND cremations if running 12 hours a day, 7 days a week.