it's simple really, it's math using NASCAR drivers. Here's an example.

AJ Allmendinger(84) - Brian Vickers(83) = Martin Truex Jr (1)

each equation must have a driver's name in the problem and every answer must end up being a driver.

symbols:
+ add
- subtract
/ divide
x or * multiply
= equals

So.... let's begin

Carl Edwards - Jamie McMurray - Matt Kenseth - Greg Biffle + Kurt Busch = ?