How are these numbers calculated? (show)

Points Above 12th  (Full Screen)
Chance Will Win Championship  (Full Screen)
RaceFinishStartLapsLeadPointsBonusPenaltyTotalPurse
Daytona 50034311516161$305,158
Auto Club 50030122487373104,760
Shelby 427153228511185123123,235
Kobalt Tools 5002619326858593,935
Food City 5002135501100100108,660
Goody’s Fast Relief 5004030349434388,535
Samsung 50039292494646104,058
Subway Fresh Fit 5003923243464684,310
Aaron’s 49929421797676104,635
Crown Royal Presents Richmond 400163640011511595,060
Southern 5002828353797996,583
Coca-Cola 6003372271165550120208,985
Dover 4003340282646498,660
Pocono 5003134199707086,160
LifeLock 400171320011211299,985
Toyota/Save Mart 350362211335556092,193
Lenox Industrial Tools 301253427218859397,210
Coke Zero 40022341601975102113,835
LifeLock.com 40034412376161101,885
Allstate 400 at the Brickyard28321597979167,135
Pennsylvania 5003334195646485,735
NASCAR Sprint Cup Series at the Glen18229010910988,960
Michigan 400372497525292,385
Sharpie 50032314906767107,565
Pep Boys Auto 5001629325115115116,935
Chevy Rock and Roll 400
Sylvania 3002428300919196,910
Dover 400 Number 23431181616188,435
Kansas 40034372636161101,885
Pepsi 50038381214949107,560
Bank of America 5003019332737389,910
Tums Fast Relief 5003733130525287,960
Amp Energy 500323418936757295,335
Dickies 50027293318282121,760
Checker O'Reilly Auto Parts 5002222310979790,810
Ford 40039372274646
8,714102,719+30-50=2,699$3,747,122