How are these numbers calculated? (show)

Points Behind 1st  (Full Screen)
Chance Will Win Championship  (Full Screen)
RaceFinishStartLapsLeadPointsBonusPenaltyTotalPurse
Chevy Silverado HD 25011100161855190$93,375
San Bernardino County 2003710016516529,325
American Commercial Lines 200232129949410,400
Kroger 25016525311511510,650
O'Reilly Auto Parts 25031416710165517027,575
Quaker Steak and Lube 2003433661618,025
NASCAR Craftsman Truck Series Ohio 25021125017017032,125
AAA Insurance 20028719797911,000
Sam’s Town 400262591858510,925
Michigan 20029793767610,500
Toyota Tundra Milwaukee 20011320013013011,500
O'Reilly 20021320017017035,950
Built Ford Tough 22513315012412415,275
Power Stroke Diesel 2009920113813811,825
Toyota Tundra 20015215011811810,425
O'Reilly 2008720014214211,100
Missouri/Illinois Dodge Dealers Ram Tough 20032154067679,235
New Hampshire 20024919891918,150
Smith’s Las Vegas 35032283167677,900
Mountain Dew 25027273308258713,050
Kroger 2002120026170517534,550
EasyCare Vehicle Service Contracts 200252612788888,400
Silverado 350K61514915015015,275
Casino Arizona 150101615013413412,700
Ford 200161913711511514,975
3,444822,981+20-0=3,001$464,210