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 Beach
RoadRunner Turbo Indy 300234961212
92nd Indianapolis 50024111561212
ABC Supply Company A.J. Foyt 225
Bombardier Learjet 550256561010
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 3002717561010
Detroit Indy Grand Prix2126561212
Peak Antifreeze Indy 300267871010
507066+0=66