SCHEMA:
CREATE TABLE table_name_40 (round INTEGER, pick VARCHAR, college_junior_club_team VARCHAR, player VARCHAR)
USER:
What is Sum of Round, when College/Junior/Club Team is Brandon Wheat Kings ( WHL ), when Player is Mike Perovich (D), and when Pick is less than 23?

QUERY:
SELECT SUM(round) FROM table_name_40 WHERE college_junior_club_team = "brandon wheat kings ( whl )" AND player = "mike perovich (d)" AND pick < 23