Mary bought a share for $$146\mathrm{.}56$ today with a $7\mathrm{.}5\%$ return and an annual dividend of $$5$ per share. She estimates the price would increase at the end of year one, and it will further increase to $$159$ at the end of year two. Provided the rate of return, and the annual dividend remain the same, what is the estimated increase of the stock price at the end of year one?