Citizen Zavidova worked as a school foreman with a salary of 3,500 rubles. As a result of the merger of the two educational institutions, on June 1 she was transferred to the position of a janitor with a salary of 2100 rubles. However, on June 3, Zavidova became seriously ill and only started working on October 5, and on October 12, in accordance with the vacation schedule, she went on annual paid leave, receiving vacation pay in the amount of 2100 rubles.
How is the average daily earnings calculated for vacation pay? How much should Zavidova get as vacation pay?

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