Please list detailed steps, especially the second question.

The Brigapenski Co. has just paid a cash dividend of $2 per share. Investors require a 16% return from investments such as this. If the dividend is expected to grow at a steady 8% per year, what is the current value of the stock? what would the stock sell for today if the dividend was expected to grow at 20% per year for the next three years and then settle down to 8% per year, indefinitely