dont use excel

Computech is expanding rapidly and currently needs to retain all of its earnings. However, investors expect Computech to begin paying dividends, beginning with a dividend of $0.60 coming 3 years from today. The dividend should grow rapidly, at a rate of 30% during years 4 and 5; but after Year 5. growth should be a constant 6% per year. If the required return on Computech's equity is 13%. what is the value of the stock today? (SHOW ALL YOUR CALCULATIONS FOR FULL/PARTIAL CREDIT)