How are these numbers calculated? (show)

Points Behind 1st  (Full Screen)
Chance Will Win Championship  (Full Screen)
RaceFinishStartLapsLeadPointsBonusTotal
GAINSCO Auto Insurance Indy 300
Honda Grand Prix of St. Petersburg
Indy Japan 300
Toyota Grand Prix of Long Beach1013830
RoadRunner Turbo Indy 300
92nd Indianapolis 500
ABC Supply Company A.J. Foyt 225
Bombardier Learjet 550
Iowa Corn Indy 250
SunTrust Indy Challenge
Camping World Watkins Glen Grand Prix
Firestone Indy 200
Honda 200
Rexall Edmonton Indy
Meijer Indy 300
Motorola Indy 300
Detroit Indy Grand Prix
Peak Antifreeze Indy 300
8300+0=0