In 15 years, Madison plans to buy a second home/condominium on the beach. The condos currently cost $180,000 and are expected to increase in value each year at a rate of 5%. Assuming Madison can earn 8% annually on her investments, how much must she invest at the end of each of the next 15 years to be able to buy her beach condo? Round to the nearest whole number and no commas. Answer: 13782