A 211 lb man eats an order of FrenchFries consuming 250 Cal of food energy. Afterwards he feels guiltyand decides to work off the excess calories by walking upnine flights of stairs 2.0 times. (The total height of nine flights of steps is 140 ft) Calculate the energy the man has burnedoff by doing the exercise. Assume that work is done only when walking up the steps. Note: 1 Cal = 4.184 kJ