Suppose you have been hired as a financial consultant to Defense Electronics, Inc (DET), a large publicly traded firm that is the market share leader in radar detection systems (RDSs). The company is looking at setting up a manufacturing plant to produce a new line of RDSs. This will be a five-year project. The company bought some land three years ago for $4.5 million in anticipation of using it as a toxic dump site for waste chemicals, but it built a piping system to safely discard the chemicals instead. The land was appraised last week for $5.3 million. In five years, the after tax value of the land will be $5.7 million, but the company expects to keep the land for future project. The company wants to build its new manufacturing plant on this land; the plant and equipment will cost $32 million to build. The following market data DEI's securities are current:

Debt: 230,000 7.2 percent coupon bonds outstanding, 25 years to maturity, selling for 108 percent of par; the bonds have a $1,000 par value each and make semiannual payments.

Common stock: 8,800,000 shares outstanding, selling for $71 per share: the beta is 1.1.

Preferred stock: 450,000 shares of 5.0 percent preferred stock outstanding, selling for $81 per share

Market: 7 percent expected market risk premium: 5 percent risk-free rate.

DEI uses HSOB as its lead underwriter. HSOB charges DET spreads of 8 percent on new common stock issues, 6 percent on new preferred stock issues and 4 percent on new debt issues. HSOB included all direct and indirect issuance costs (along with its profit) in selling these spreads. HSOB has recommended to DEI that it raise the funds needed to build the plant by issuing new shares of common stock. DET's tax rate is 35 percent. The project requires $1,300,000 in initial net working capital investment to get operational. Assume HSOB raises all equity for new projects externally.

I need to find out the cost of common stock. I do not know how to find common stock or how to calculate the cost