please help show the step by step calculations needed for solving this problem! :)

A firm evaluates all of its projects by applying the IRR rule. A project under consideration has the following cash flows: Year Cash Flow 0 -$27,900 11,900 14,900 10,900 If the required return is 18 percent, what is the IRR for this project? (Do not round intermediate calculations and enter your answer as a percent rounded to 2 decimal places, e.g., 32.16.) IRR Should the firm accept the project? Yes O No