Please explain the formula for PV factor @11% too.

Coronado Corporation is reviewing an investment proposal. The initial cost is $106,200. Estimates of the book value of the investment at the end of each year, the net cash flows for each year, and the net income for each year are presented in the schedule below. All cash flows are assumed to take place at the end of the year. The salvage value of the investment at the end of each year is assumed to equal its book value. There would be no salvage value at the end of the investment's life. Year 1 Investment Proposal Book Annual Annual Value Cash Flows Net Income $69,500 $45,200 $8,500 41,700 39,400 11,600 20,800 36,000 15,100 6,400 29,000 14,600 0 25,630 19,230 2 3 4 5 Coronado Corporation uses an 11% target rate of return for new investment proposals. Click here to view PV table. (a) What is the cash payback period for this proposal? (Round answer to 2 decimal places, e.g. 10.50.) Cash payback period 2.06 years (b) What is the annual rate of return for the investment? (Round answer to 2 decimal places, e.g. 10.50%.) Annual rate of return for the investment 28.22 % (c) What is the net present value of the investment? (If the net present value is negative, use either a negative sign preceding the number e.g. -45 or parentheses eg (45). Round answer to O decimal places, e.g. 125. For calculation purposes, use 5 decimal places as displayed in the factor table provided.) Net present value $