Need guidance

Abner and Maude are both in their eighties. They're thinking about selling their home for $500,000 and moving into an apartment for seniors. The apartment will cost $60,000 per year, payable in full at the beginning of each year. If they can earn 6% annually on the proceeds from the sale of their home and if they live for 10 years more, how much will they be able to leave to their children as an inheritance? Show your calculations