can anyone help me with this question?

The internal rate of return method is used by Testerman Constructon 60 , in analyzing a capital expenditure proposal that involves an iavestment of $57,718 ond annuat net cash flows of 514,000 for each of the eight years of its useful ife. a. Determine a present value factor for an annisity of $1 which can be used in determining the internal rate of return. If required, round your answer to three decimal places. b. Using the factar determined in part (a) and the present value of an anmity of $1 table abave, decermine the intemal rate of retum for the proposal. 46