How are these numbers calculated? (show)

Points Behind 1st  (Full Screen)
Chance Will Win Championship  (Full Screen)
RaceFinishStartLapsLeadPointsBonusPenaltyTotalPurse
Camping World 300 presented by Chevrolet66120150150$61,893
Stater Bros. 300341663616129,133
Sam’s Town 300
Nicorette 3002918187767621,543
Sharpie Mini 300351660585827,578
Pepsi 300171822311211221,593
O'Reilly 300
Bashas' Supermarkets 200
Mexico 200
Aaron’s 312
Nationwide 250211625210010022,968
Diamond Hill Plywood 200181114610910921,593
Carquest Auto Parts 3003120178707023,463
Dover 2003139130707021,663
Federated Auto Parts 3002217222979722,903
Meijer 3005620015515536,043
Milwaukee 250202225010310323,968
Camping World 200
Daytona 25019110510610633,143
Chicagoland 300
Gateway 250
Kroger 2003219164676719,508
NAPA Auto Parts 200
Zippo 200 at The Glen
Carfax 250
Food City 250
Camping World 300182214810910930,818
Emerson Radio 250381994494921,258
RoadLoans.com 20033159716456921,543
Kansas 300211119710010029,113
Dollar General 3003024175737323,068
Memphis 250
O'Reilly Challenge
Arizona.Travel 200162420011511527,863
Ford 300349157161566
3,36821,905+10-0=1,915$540,655