Hi Can I get help solving?

Sanaponic, Inc. will pay a dividend of $6 for each of the next 3 years, $8 for each of the years 4-7, and

$10 for the years 8-10.Thereafter, starting in year 11, the company will pay a constant dividend of

$10/year forever.If you require 22 percent rate of return on investments in this risk class, how much is

this stock worth to you?