To solve this question we have to make deduct these 2 years. 2102 minus 1977 will give the answer.
You are 125 years old.
(1500 months are passed.)
From 1977 to 2102 there are 125 years. If you want to learn your age in 2102 (born in 1977) your age is 125.
Let's see what will be your age if you born +1 or -1 from that date.