Marcus owns $500$ shares of Pharmacon Inc. The firm pays a quarterly dividend of $$0\mathrm{.}50$ per share with the option to participate in a dividend reinvestment program and reinvest the cash dividends into additional shares of company stock each quarter. If the stock is selling for $$128\mathrm{.}00$ per share ex$-$dividend, how many shares of stock will Marcus receive in the next dividend period if he chooses the dividend reinvestment plan?