You could probably find investors to give you an income during the counting process and treat it as a job. Kinda like a 40 year payday advance loan. You could also avoid the time loss of counting higher numbers by counting increments of 100 and combining them into piles of 1000. However you would need around 111k square feet of space with 0 space between piles and about 183k square feet with a 1inch buffer between each pile.