Please attach working on paper and not excel

Hugo Boos is considering investing in a new fashion line of athleisure wear. This project is predicted to produce cash flows of $15m every five years with the first cash flow in 24 years' time. It is expected to produce a total of 16 cash flows over its life. The required rate of return is 4.2492% p.a. compounded monthly. What is the current value of his athleisure wear project to Hugo Boos