To solve this question we have to make deduct these 2 years. 2112 minus 1974 will give the answer.
You are 138 years old.
(1656 months are passed.)
From 1974 to 2112 there are 138 years. If you want to learn your age in 2112 (born in 1974) your age is 138.
Let's see what will be your age if you born +1 or -1 from that date.