$7.$ Interest rates were at historical highs in the early $1980$s$.$ In August of $1981,$ you could earn$17\mathrm{.}5\%$ compounded annually on a five$-$year term deposit with a Canadian bank. In Februaryof $2022,$ that rate dropped to $1\mathrm{.}25\%$ compounded annually. On a $$10,000$ deposit for a termof five years, how much more would you have earned at the historical high interest rate thanat the more recent low rate?