800,000 to 900,000 calories? That is a lot of intake. I don't think I can eat that much in one day.
I'm sure that they meant to say 800 to 900 calories.
Nope.
What you are calling calories are actually kilocalories.
In nutrition, they just leave off the kilo part.
(I once fell for that too. I calculated how many flights of stairs I would have to run up to burn a pound’s worth of calories - it didn’t work)