can you please solve this question as fast as you can and please do it with proper calculation.

Beta Roberta Clark has a portfolio comprised of the following three stocks: Expected Number of Stock Share Price dividend next shares year(D1) Westport $28.21 2,000 $1.70 SignalChem $41.50 1,500 $3.25 $15.45 RE Royalties $1.80 3,500 Constant dividend growth rate 5% 8% 4% 0.85 1.25 1.70 The risk-free is currently 5% and the market risk premium is 7%. What is the Beta of Roberta Clark's portfolio