What is the formula for value of share if in question the term perpertuity is given and what is the formula for expected return on share

A share has a beta of1.4. The risk-free rate of return is 3.6% and the market risk premium is 8.5%. What is the expected return on the share? A share is expected to pay an annual dividend of $3.09 next year, and this dividend is then expected to grow at a constant rate of 2.4% pa in perpetuity. If the required rate of return is 10.8% p.a., what is the value of the share