Ace Appliance's repairmen think in sevens and twos. They offer prompt service to clients seven days a week, even during evening hours, to ensure they can service malfunctioning household appliances whenever they break down. When scheduling service visits, they give clients a two-hour window for their arrival, saving homeowners the hassle of staying home all day or teaching the dog to sign work orders. But while Ace Appliance's factory-trained and certified technicians keep sevens and twos in high regard, their stock and sales associates focus on a different number: five million––referring to the five million parts they always have in stock for a variety of appliances, makes, and models.