A couple thinking about retirement decide to put aside $30,000 each year in a savings plan that earns 12.50% interest. In 10 years they will receive a gift of $50,000 that also can be invested. a. How much money will they have accumulated 15 years from now? (Do not round intermediate calculations. Round your answer to 2 decimal places.) b. If their goal is to retire with $1,754,528 of savings, how much extra do they need to save every year? (Do not round intermediate calculations. Round your answer to 2 decimal places.)