Dalton loaned $$550,000$ to Doc Holliday on August $24.$ On February $8$ of the following year, Doc paid to Dalton the $$65,000$ interest that had accumulated on the debt up to that time. What simple rate of interest was Dalton charging on this loan?

$21\mathrm{.}90\%$

$74\mathrm{.}32\%$

$25\mathrm{.}68\%$

$21\mathrm{.}79\%$

$24\mathrm{.}69\%$