To solve this question we have to make deduct these 2 years. 2120 minus 1976 will give the answer.
You are 144 years old.
(1728 months are passed.)
From 1976 to 2120 there are 144 years. If you want to learn your age in 2120 (born in 1976) your age is 144.
Let's see what will be your age if you born +1 or -1 from that date.