PLEASE ANSWER QUESTION FULLY. please explain step by step and the formulas used to solve. please explain when and how claculator is used during process thank you

3. Dominion Energy, Inc (D) trades on the New York Stock Exchange. Dominion provides energy to customers in several states in the eastern U.S. including Virginia, North Carolina, and South Carolina. The company's beta is 0.80 and the risk-free rate is 4% and the market risk premium is 6%. Dividends paid in 2021 equaled $2.60(D0). Dividends are expected to grow at 5% for the next five years. EPS for the last four quarters totaled $3.95. Earnings are forecasted to grow at 6.5% for the next five years. The PE has ranged from 17 to 21 over the last few years. The current price is $66.97. Should an investor buy this stock