To solve this question we have to make deduct these 2 years. 2104 minus 1987 will give the answer.
You are 117 years old.
(1404 months are passed.)
From 1987 to 2104 there are 117 years. If you want to learn your age in 2104 (born in 1987) your age is 117.
Let's see what will be your age if you born +1 or -1 from that date.