what is thw weighted average cost of capital?

please show steps, answer should be 8.23%

. . You will calculate several numbers to find the Weighted Average Cost of Capital of Sony: Sony has bonds outstanding with a coupon rate of 4.75% and a maturity of 2041 and a price expressed as 105.572. Underwriters will charge 2% of the price to issue the bond. Sony paid a dividend of $1.37 in the current year (time 0) and the current stock price is $60.81. You expect constant growth of 4% per year in dividends. Sony has a beta of 1.15. The risk free rate is 3% and the market risk premium is 5% Sony's common stock has value (market cup) of S473 billion and debt of 853 billion leading to a weight of debt of 10% and weight of common stock of 90% Sony's marginal tax rate is 21%