How many diapers will my children go through??

I've always loved this question.  Really how many diapers will we have changed once all of our children are potty trained??  3 of the Turkey Bottoms are out of diapers and I'm hoping (translated = procrastinating) that Gabe will be trained soon.  But I found a site that gave me this equation to use for the first 2 years of life.
6 wet diapers per day for 730 days = 4,380
1 dirty diaper every 2.5 days for 730 days = 292
1 “oops I changed a diaper that wasn’t wet or dirty because I’m a new mom” diaper for the first month = 30
= 4,702

Now, obviously this equation isn't perfect... for instance my Turd Bottoms, whoops, I mean, Turkey Bottoms poop more than once a day let alone once every 2.5 days!!!  So I'm bumping that number up to 730!  Which gives me 5,140 diapers per child.

5,140 x 5 = (insert drum roll here)...
25,700 diapers!

Ugh.  No wonder most parents stop having children after 2 kiddos!!