To solve this question we have to make deduct these 2 years. 2103 minus 1958 will give the answer.
You are 145 years old.
(1740 months are passed.)
From 1958 to 2103 there are 145 years. If you want to learn your age in 2103 (born in 1958) your age is 145.
Let's see what will be your age if you born +1 or -1 from that date.