CREATE TABLE table_57932 ("Club/Team" CLOB, "League" CLOB, "Venue" CLOB, "Established" FLOAT, "Premierships" CLOB)

How many premierships for the commonwealth bank trophy league?
SELECT "Premierships" FROM table_57932 WHERE "League" = 'commonwealth bank trophy'
SELECT "Premierships" FROM "table_57932" WHERE "League" = 'commonwealth bank trophy'