Please solve showing steps using a financial calculator, thank you!!

Everything is the same except: cash investment of $2,000 and Project A is expected to produce a net cash flow of $600 a year , and Project B $800, $300, $700, and $500.

Projects A and B have an identical cash investment of $1,000. Project A is expected to produce a net cash flow of $400 a year for the next five years. Project B will result in net cash flows of $500,$400,$500, and $400. Determine the payback period for Projects A and B