Could you please don't use Excel formulas. I would like to see solutions step by step. Thank you

Preferred Stock and WACC The Saunders Investment Bank has the following financing outstanding. What is the WACC for the company? Debt: 40,000 bonds with a coupon rate of 4.9 percent and a current price quote of 106.5; the bonds have 15 years to maturity and a par value of $1,000.40,000 zero coupon bonds with a price quote of 21.8,30 years until maturity, and a par value of $10,000. Both bonds have semiannual compunding. Preferred stock: 135,000 shares of 3.5 percent preferred stock with a current price of $87 and a par value of $100. Common stock: 1,900,000 shares of common stock; the current price is $73 and the beta of the stock is 1.15. Market: The corporate tax rate is 23 percent, the market risk premium is 7 percent, and the risk-free rate is 3.6 percent