Explanatory note of the system administrator. The task is to press 20 meters of twisted pair. The result is 60.

The explanatory note. (Originally written by hand)
Please forgive me for not being able to measure the cable with my hands, and started to measure the cable with a roulette 1 meter per piece. I thought it would be exactly 20 meters, pulled one meter out of the bay, but did not calculate, tried, but did with the stock. I pulled the cable as long as I could, I didn’t know that I would stretch up to 60 meters.