To solve this question we have to make deduct these 2 years. 2120 minus 1957 will give the answer.
You are 163 years old.
(1956 months are passed.)
From 1957 to 2120 there are 163 years. If you want to learn your age in 2120 (born in 1957) your age is 163.
Let's see what will be your age if you born +1 or -1 from that date.