Any one knows MAX doc?
If you operate routes like YYZ-LHR/CDG/etc. with the 747 and use up all its hours, the money it earns should end up at around maybe $600,000, perhaps less. But then again, I've never had anything larger than an A300 before, so I might be way off...

Edit: Also, maintenance costs will go for around $500,000+ within a few months and millions later on, so I highly recommend you to either sell, lease or scrap the aircraft right away. (Since no one will dare to buy/lease your 747's, I guess scrapping would be the best idea).