please provide calculations without Excel.

Simple Corp. is considering introducing a new product that requires an immediate investment in manufacturing facilities of $200000 which is with a residual value of $22000 after 6 years. These facilities will require additional capital outlays of $45000 each on the third and fourth years. Net returns on this investment are estimated to be $80000 per year for each of the four years and then levels off at $50000 until the project is terminated at the end of year 6 . Determine the investment's rate of return on (rounded to the nearest 2 decimal places). (6 marks)