The Greater Vancouver regional district chlorinates the water supply at a rate of 1.00ppm. The chlorine is introduced in the form of sodium hypochlorite, which is 47.62% chlorine by mass. If there are 1.8 million people served by this water and each person uses 750 L of water a day, how many kilograms of sodium hypochlorite must be added to the water supply each week to maintain the 1.00ppm chloride level?