To solve this question we have to make deduct these 2 years. 2118 minus 1977 will give the answer.
You are 141 years old.
(1692 months are passed.)
From 1977 to 2118 there are 141 years. If you want to learn your age in 2118 (born in 1977) your age is 141.
Let's see what will be your age if you born +1 or -1 from that date.