cost of Investment

Good morning Sir this is more of a revision question: if there is a deferred payment of, lets say, 24m in 3 years and the cost of capital is 10%, the unwounding entries will be as follows: PV = 24/1.1^3=18m year 1: Dr Finance cost ---- 1.8 (18 x 10%) Cr Def Liab ----------- 1.8 year 2 Dr finance cost ---- 1.98 (18 x 1.1 X 10%) Cr Def Liab --------- 1.98 year 3 Dr finance cost ---- 2.39 (18 x 1.1 x 1.1 x 1.1 x 10%) Cr Def Liab --------- 2.39 correct? thanks in advance