9-1-2. A snail is crawling along a straight line. On the first day, it crawls 1 m forward and $1 / 2$ m backward. On the second day, it crawls $1 / 2$ m forward and $1 / 3$ m backward. On the third day, it crawls $1 / 3$ m forward and $1 / 4$ m backward, and so on. How far from the starting point will it be at the end of the 55th day?
Express the answer in meters.

Answer. $55 / 56$.