To solve this question we have to make deduct these 2 years. 2115 minus 1998 will give the answer.
You are 117 years old.
(1404 months are passed.)
From 1998 to 2115 there are 117 years. If you want to learn your age in 2115 (born in 1998) your age is 117.
Let's see what will be your age if you born +1 or -1 from that date.