need help on these two questions not sure how to input on excel

9.) An investment is expected to produce the following annual year-end cash flows: Year 1, $16,500; Year 2, $22,500; Year 3, $22,500; Year 4, $30,000; and Year 5, $35,000 If the investment costs you $128,000 today what is its expected annual internal rate of return, compounded annually? Year CFs 0 1 2 3 4 -128,000 16,500 22,500 22,500 30,000 35,000 IRR -0.35 % 10.) Recalculate the IRR for the previous question assuming the cash flows are all received in the beginning of the year. Year 1 5 CFs -128,000 16,500 22,500 22,500 30,000 35,000 0.35 % IRR