Can somebody please explain how to do any of this in excel? I am struggling very badly. Thank you.

Sarah wants to start her own business in 10 years. She needs to accumulate $200,000 (today's dollars) in 10 years to sufficiently start her business. She assumes that inflation will average 4%, and that she can earn a 9% compound annual after-tax return on her investments. Sarah wants to increase her annual saving with inflation adjustment. What will Sarah's payment be at the end of the second year? Part A: What is annual equal saving? Part B: They will increase their savings annually at the rate of inflation. How much should they save at the end of year 2 ? Part C: They will increase their savings annually at the rate of inflation. How much should they save at the beginning of year 2