Hi, just wondering if i could get a step-by-step answer to these questions with formulas? thank you

In 2020 and 2021 Mantel Limited paid a $0.50 dividend to its shareholders. Looking forward to a post COVID environment, it plans to pay $0.60 in 2022, before increasing to $0.70 in 2023, following on dividends will grow indefinitely at 5% per annum. If the required return is 7%, what is the fair value of Mantel Limited shares today (i.e., in 2021)