Below is an context that describes a sql query, paired with an question that provides further information. Write an answer that appropriately completes the request.  # noqa: E501
### Context:
CREATE TABLE table_name_65 (number_of_seasons_in_top_division INTEGER, number_of_seasons_in_prva_hnl VARCHAR)
### Question:
Name the average number of seasons for Prva HNL of 17
### Answer:
SELECT AVG(number_of_seasons_in_top_division) FROM table_name_65 WHERE number_of_seasons_in_prva_hnl = 17