To solve this question we have to make deduct these 2 years. 2113 minus 1973 will give the answer.
You are 140 years old.
(1680 months are passed.)
From 1973 to 2113 there are 140 years. If you want to learn your age in 2113 (born in 1973) your age is 140.
Let's see what will be your age if you born +1 or -1 from that date.