please show written step by step

Question 30 (15 points) [Challenging Question - Hint: Recall how we derive the annuity formula.] Assume that you plan to save $15,000 per year for the next 25 years. Using this financial resource, you wish to fund your retirement expenditure for exactly 20 years; and, assume that the annual retirement expenditure will grow 3% per year due to inflation. Assume annual interest rate is 10 percent. Please calculate the retirement expenditure for the first year of the retirement