If the total supply turns into a max of 1 million Bitcoins (because the other 20 million got lost? presumably?) and he total global debt is the same as the value of all remaining Bitcoins then the answer is approximately $59.777.777,77 each. Is that what you were asking?

And yes $2842857,14 is correct.
But why would all debt be sucked into the blockchain?
Maybe you are wondering what would happen if all the money in the world goes into Bitcoin?

This pic is outdated by a few months, but have a look to see Bitcoin's potential: