please explain how u get the data from yahoo finance as well.help please

You are a junior financial executive for Lockheed Martin. The CFO is assessing the company's weighted average cost of capital and wants your help estimating the current cost of equity. To estimate the cost of equity, use the following standards: The cost of equity equals the required return based on the CAPM The proxy for the market is the S&P 500 The proxy for the risk-free rate is the 1-month T Bill Use 5 years of monthly data to estimate beta The market return over the next year is expected to be equal to the market return over the past year The risk-free rate over the next year is expected to be o Based on this information, what is Lockheed Martin's current cost of equity