Please show me the formulas and the steps,

Ford issues a coupon bond $1,000 which is the same as the bonds per value bond coupon 7%, pays coupon once per year and maturity of 20 years.

If an investor purchase this bond at $1,000 for each year except the last year the investor would receive a payment of $

When the bond matures, the investor would receive a final payment of $

Now suppose the price of the bond change to $

Assuming an investor purchased the bond at $1,060, the investor would receive a current yield equal to %