In a certain solar house, energy from the Sun is stored in barrels filled with water. In a particular winter stretch of five cloudy days, 1.37 x 106 kcal is needed to maintain the inside of the house at 22.4oC. Assuming that the water in the barrels is at 56.3oC and that the water has a density of 1.00 x 103 kg/m3, what volume of water is required? Take the specific heat of water to be 1.00 kcal/kg.