A small power plant is designed to generate (output) 7.04 kW of power (7.04x10 J/s). The plant is powered by steam at 798 K with the exhaust at 309 K. This power plant is less efficient than an ideal engine, of course. It's efficiency is 57.5% of the efficiency of an ideal (Carnot) engine with the same high and lower temperatures. What is the magnitude of the heat that is exhausted by the engine each second? Give your answer in kJ (10 J) to at least three significant figures. Your answer is a positive number, the magnitude of the output heat.