How are these numbers calculated? (show)

Points Above 12th  (Full Screen)
Chance Will Win Championship  (Full Screen)
RaceFinishStartLapsLeadPointsBonusPenaltyTotalPurse
Daytona 5001723152112112$295,246
Auto Club 50022142499797106,473
Shelby 427205284103103116,048
Kobalt Tools 5003834179494982,808
Food City 5001013503134134113,923
Goody’s Fast Relief 500142450012112194,773
Samsung 5004111216404099,606
Subway Fresh Fit 500142931212112189,423
Aaron’s 499434188160160161,598
Crown Royal Presents Richmond 400112140013013096,798
Southern 5003310312646491,671
Coca-Cola 60026232278585104,898
Dover 4002020400103103104,173
Pocono 500620200150150107,998
LifeLock 4003133198707092,973
Toyota/Save Mart 35033113165165175,496
Lenox Industrial Tools 3012318273949494,073
Coke Zero 400618160150150138,523
LifeLock.com 4001110267130130117,348
Allstate 400 at the Brickyard22111609797169,248
Pennsylvania 500341819216156677,898
NASCAR Sprint Cup Series at the Glen249091705175178,373
Michigan 4003526199585886,798
Sharpie 500325500165165190,473
Pep Boys Auto 50023113249494107,223
Chevy Rock and Roll 4002216400979788,448
Sylvania 30020313002103510895,548
Dover 400 Number 2142740012112194,673
Kansas 4001427267121121111,698
Pepsi 50023272499494106,773
Bank of America 5002213333979786,573
Tums Fast Relief 5002734499828287,673
Amp Energy 500341718836156688,323
Dickies 5001519333118118125,098
Checker O'Reilly Auto Parts 500112131213013096,948
Ford 400353251458563
10,130193,805+25-0=3,830$4,075,617