Can you Please help me solve the attached question!

Problem 9-9 (similar to) IQuestion Help (Cost of equity) The common stock for the Bestsold Corporation sells for $56. If a new issue is sold, the flotation costs are estimated to be 8 percent. The company pays 50 percent of its earnings in dividends, and a $4.00 dividend was recently paid. Earnings per share 6 years ago were $6.00. Earnings are expected to continue to grow at the same annual rate in the future as during the past 6 years. The firm's marginal tax rate is 37 percent. Calculate the cost of (a) internal common equity and (b) external common equity