Počet obratů, n, je tu = ‚ protože doba obratu je 1 + 1/10 roku (bereme-li rok o 50 týdnech) = 11/10roku.
The number of turnovers, n, is here 50/55 or 10/11, because the time of turnover is 1 plus 1/10 of the year (of 50 weeks), or 11/10 years.