To solve this question we have to make deduct these 2 years. 2099 minus 1987 will give the answer.
You are 112 years old.
(1344 months are passed.)
From 1987 to 2099 there are 112 years. If you want to learn your age in 2099 (born in 1987) your age is 112.
Let's see what will be your age if you born +1 or -1 from that date.