How many people did Mayor Olav Martin Vik preside over?
CREATE TABLE table_name_87 (innhabitants INTEGER, mayor VARCHAR)
SELECT AVG(innhabitants) FROM table_name_87 WHERE mayor = "olav martin vik"
### Context: CREATE TABLE table_name_87 (innhabitants INTEGER, mayor VARCHAR) ### Question: How many people did Mayor Olav Martin Vik preside over? ### Answer: SELECT AVG(innhabitants) FROM table_name_87 WHERE mayor = "olav martin vik"