Coupons are som commonly semi-annual that it is a safe assumption in the absence of useful information.
A 15% coupon, paid semi-annually, then: 1000*(0.15/2) = 75
"6 years remaining" is a little tricky. Let's assume a coupon payment was just made. There are then 12 coupons and the final asset sale to calculate the present value at each interest rate.
Let's see what you get.