This​ year, Druehl,​ Inc., will produce 60 comma 000 hot water heaters at its plant in​ Delaware, in order to meet expected global demand. To accomplish​ this, each laborer at the plant will work 160 hours per month. If the labor productivity at the plant is 0.15 hot water heaters per labor​ hour, how many laborers are employed at the​ plant?