My friend said she has a 'million tons of work'.I know she has a 70 page paper to do. How is it that 70 pages weigh nearly 1 million tons?

Each page must weigh 0.0141 million tons (about 14.1 kilotons). Normally paper is really light though but according to my calculations, this paper has a density of 40 kilotons per in³. Where is this extra density coming from?!?