Apple brought in $4.976 billion in revenue from the sale of 3.76 million Macs last quarter. Divide the $4.976 billion in revenue by 3.76 million Macs and you get an average selling price of $1,323.40.

A June 1st research note from Peter Misek of Jefferies & Company pegged Mac gross margins at 28%. Multiply $1,323.40 by .28 and Apple makes $370.55 for every Mac sold.

HP’s Personal Systems Group, the division at HP that sells PCs, brought in $9.415 billion in revenue and turned a profit of $533 million last quarter. Their operating margin, which doesn’t factor in overhead costs, was 5.66%. If we assume they spent 1% of their $9.415 billion in revenue – $94.15 million – on operations, then their profit margin was 6.66%. But let’s give them the benefit of the doubt and make it 8%.

The average selling price of a Mac increased 5.71% over the last two quarters. If we apply that growth rate to NPD’s data that says the ASP of a PC was $615 in November, then the ASP of a PC today is $650.12. Multiply that number by an 8% profit margin and HP makes $52.00 for every PC they sell.

Apple makes more money from the sale of one Mac than HP does from selling seven PCs.