Where I work, we only have one job that takes around 8 hours (and I'm sure that could be improved on if I had the time or inclination to do so) and it involves converting 1.6 million records into printable documents, sorting, then distributing them to various locations around the country for printing. It only happens once every quarter, so it's not a real big deal.

I'm sure if this was based in the U.S. it would be at least 10 times bigger.