Grouper Inc. has completed the purchase of new Dell computers. The fair value of the equipment is $$1,021,946.$ The purchase

agreement specifies an immediate down payment of $$248,000$ and semiannual payments of $$95,420$ beginning at the end

of $6$ months for $5$ years. What is the interest rate, to the nearest percent, used in discounting this purchase transaction? $($Round

factor values to $5$ decimal places, e$.$g$.1\mathrm{.}25124$ and final answer to $0$ decimal places, e$.$g$.25\%.)$