GreenTile, Inc. is a fictional manufacturer of heat-absorbing ceramic tiles that can store and radiate heat for hours after sundown, saving homeowners heating costs during winter months. This year, GreenTile will produce 280,000 tiles at its plant in Phoenix, Arizona, to fill demand orders from its California retailers. To accomplish this, each worker at the plant must work 160 hours per month. If the labor productivity rate at the plant is 0.08 ceramic tiles per labor-hour, how many laborers should GreenTile have at its Phoenix plant?