His own workflow spreadsheet claims his daily render goal is 17, although it used to be at 20 a couple of years ago. He also supposedly had some already done that didn't go into the last update. The last update was 90 days ago. With his current daily target, that's 1,530 + whatever he was holding onto. With his old target, that's 1,800+. Those numbers are doable by BD's own words.