Title text:
The experimental math department's budget is under scrutiny for how much they've been spending on trains leaving Chicago at 9:00pm traveling at 45 mph.
Transcript:
Transcript will show once it’s been added to explainxkcd.com
Source: https://xkcd.com/3180/
Now divide them evenly between 0 people.
Then build that hotel with an infinite number of guest rooms.
They've already started building the hotel, but they've got a way to go.