A series of 8 screens collectively shows a $2,000 range for the price of a car (for example, $19,000 to $21,000). The goal of the game is to narrow the price down to a $250 range (represented by one of the screens; the edges of the ranges are lit up above the dividing lines). The contestant starts by choosing which $1,000 range within the $2,000 range (i.e., $19,000 to $20,000 or $20,000 to $21,000) contains the price of the car. If they're right, the $1,000 range is divided in half into 2 $500 ranges. If the contestant gets that right, the $500 range is further divided in half into 2 $250 ranges (hence the name Sub/Division). The contestant wins the car by picking the correct $250 range.
If the contestant is wrong at any point, however, they must earn a second chance by selecting the correct $10 range out of a $20 range for the one (read: ONE) small product shown to them. If the contestant is right, they get the second chance and can go on to the next division of the price of the car. If they were already on the last part of the car (the $250 ranges) and they win the second chance, the contestant wins the car. If they're wrong, game over. If they mess up on the car after getting the second chance, game over.