At the end of $2021,$ Toronto Dominion Bank $($TD$)$ stock cost $$66$ per share and was expected to yield $4\%$ per year in dividends $($calculated on the total value of TD stock you bought$),$ while CNA Financial Corp. $($CNA$)$ stock cost $$42$ per share and was expected to yield $3\mathrm{.}5\%$ per year in dividends.$$ If you invested a total of $$25,620$ in these stocks and expected to earn $$966$ in dividends in a year, how many shares of each stock did you purchase?