Last years sales of Merisedvir, a therapeutic drug developed by Homeland Pharmaceutics, were $18.2 million. The company anticipates an annual sales growth of 6% for Merisedvir. Currently, two other drug companies are developing equivalent drugs to Merisedvir. When the first competitors drug enters the marketplace, Homeland Pharmaceutics expects sales to decrease by 25%. When the second competitors drug is introduced, sales will decrease by an additional 5 million. Create an Excel spreadsheet that will compute the annual sales for the company up to 2035 allowing the user to enter the year each competitor enters the marketplace.