Because of its age, your car costs $9,000 annually in maintenance expense. You could replace it with a newer vehicle costing $8,100 that would be expected to have a life of 3 years. If your opportunity cost of capital is 6%, by how much must maintenance expense decrease on the new vehicle to justify its purchase? $ Number (please round your final result to 2 decimals, but keep as many decimals as possible during calculation)