Andrew$$s has $5-$year, $8$ percent annual coupon bonds outstanding with a par value of $$1,000.$ Boyega$$s has $10-$year, $8$ percent annual coupon bonds outstanding with a par value of $$1,000.$ Both bonds currently have a yield to maturity of $8$ percent. What would be the dollar gains or losses to the investors if the market rate decreases to $7$ percent?