A water park has pools, slides, and rides that, in total, make use of 7, point, 1, times, 10, to the power 77.1×10 7 gallons of water. They plan to add a ride that would make use of an additional 2, point, 4, times, 10, to the power 52.4×10 5 gallons of water. Use scientific notation to express the total gallons of water made use of in the park after the new ride is installed.