A report from the marketing department indicates that a new product will generate the following revenue stream: $62,500 in the first year, $89,400 in year two, $136,200 in year three, $128,300 in year four, and $112,000 in year five. If your firm's discount rate is 11% and the cash flows are received at the end of each year, what is the present value of this cash flow stream?

In a previous answer I saw this table:

Following table gives the present value of the stated cash flows in our question:

Year	Cash Flows (A)	Present Value of $ 1 at 11% (B)	Present Value (A*B)
1	$ 62,500	$ 0.900901	$ 56,306.31
2	$ 89,400	$ 0.811622	$ 72,559.05
3	$ 136,200	$ 0.731191	$ 99,588.27
4	$ 128,300	$ 0.658731	$ 84,515.18
5	$ 112,000	$ 0.593451	$ 66,466.55
		Total	$ 379,435.35

Total Present Value = $ 379,435.35

Would you please help me understand the equation to get Present Value of $ 1 at 11% (B)? I am not able to figure out how they are getting these numbers in the table and I want to understand the forumla better.