To solve this question we have to make deduct these 2 years. 2113 minus 1978 will give the answer.
You are 135 years old.
(1620 months are passed.)
From 1978 to 2113 there are 135 years. If you want to learn your age in 2113 (born in 1978) your age is 135.
Let's see what will be your age if you born +1 or -1 from that date.