Wojtek purchased a $$10,000$ face value strip bond on a date when it had $14$ years left until maturity. The purchase price was based on a market yield of $6\mathrm{.}2\%$ compounded semiannually. He sold the bond $4(1)/(2)$ years later when the market yield was $5\mathrm{.}2\%$ compounded semiannually. What was Wojtek$$s total gain on the investment? $($Do not round the intermediate calculations. Round your answer to two decimal places.$)$

Gain $