To solve this question we have to make deduct these 2 years. 2077 minus 1957 will give the answer.
You are 120 years old.
(1440 months are passed.)
From 1957 to 2077 there are 120 years. If you want to learn your age in 2077 (born in 1957) your age is 120.
Let's see what will be your age if you born +1 or -1 from that date.