To solve this question we have to make deduct these 2 years. 2120 minus 1985 will give the answer.
You are 135 years old.
(1620 months are passed.)
From 1985 to 2120 there are 135 years. If you want to learn your age in 2120 (born in 1985) your age is 135.
Let's see what will be your age if you born +1 or -1 from that date.