To solve this question we have to make deduct these 2 years. 2090 minus 1964 will give the answer.
You are 126 years old.
(1512 months are passed.)
From 1964 to 2090 there are 126 years. If you want to learn your age in 2090 (born in 1964) your age is 126.
Let's see what will be your age if you born +1 or -1 from that date.