I'm lost on both of these

Question 24 (1 point) 3 What is the payback period for an investment project with an upfront cost of $5,000,000, but benefits of $475,000 a year, each year, forever? (Note: Enter the number of years as your answer, but do not enter "years", just the number.) Your Answer: Answer 12 View hint for Question 24 15 Question 25 (1 point) Blanchford Enterprises is considering a project that has the following cash flow data. What is the project's intermal rate of return (IRR)? (Enter your answers as a decimal rounded to 4 decimal places, not a percentage. For example, enter 0.0843 instead of 8.43%) 18 Year Cash Flow ($ -1000 21 200 1200 4 Your