Need excel formula and explanation!

Westco Co. issued 15 -year bonds a year ago at a coupon rate of 5.4 percent. The bonds make semiannual payments and have a par value of $1,000. If the YTM on these bonds is 4.5 percent, what is the current price of the bond in dollars? input area: 14 (Use cells A6 to B12 from the given information to complete this question. You must use the built-in Excel function to answer this question. Leave the "Basis" input blank in the function. You may enter a constant as a hard coded value.)