Can someone provide formula and step-by-step instructions for the below problem? -Thanks

l. I"? 01 III IIIIEVEII L'F stream . Find the present value of an income stream that has a negative ow of $100 per year for 3 yearsI a positive ow of $2131] in the 4th year, and a positive o'ar ofSEEI per year in Years 5 through E. The appropriate discount rate is 4% for each of the rst 3 years and 5% for each of the later years. Thus, a cash ow accruing in Year 8 shoulrl be discounted at 5% for some years and 4% in other years. Ail payments occur at year-end. Commts in ml -} zwtnmoas.132.c.-auo} s 523.21 morass s 192.49 $1345.41 $ 375.13 FF'PP'F