How are these numbers calculated? (show)

Points Above 12th  (Full Screen)
Chance Will Win Championship  (Full Screen)
RaceFinishStartLapsLeadPointsBonusPenaltyTotalPurse
Daytona 500
Auto Club 500
Shelby 427
Kobalt Tools 500
Food City 500
Goody’s Fast Relief 500
Samsung 500
Subway Fresh Fit 500
Aaron’s 499
Crown Royal Presents Richmond 400
Southern 500
Coca-Cola 600
Dover 400
Pocono 500
LifeLock 400
Toyota/Save Mart 35027291138282$77,700
Lenox Industrial Tools 301
Coke Zero 400
LifeLock.com 400
Allstate 400 at the Brickyard
Pennsylvania 500
NASCAR Sprint Cup Series at the Glen293784767666,925
Michigan 400
Sharpie 500
Pep Boys Auto 500
Chevy Rock and Roll 400
Sylvania 300
Dover 400 Number 2
Kansas 400
Pepsi 500
Bank of America 500
Tums Fast Relief 500
Amp Energy 500
Dickies 500
Checker O'Reilly Auto Parts 500
Ford 400
1970158+0-0=158$144,625