CREATE TABLE table_79640 ("Round" FLOAT, "Date" TEXT, "Home Team" TEXT, "Away Team" TEXT, "Attendance" FLOAT, "Stadium" TEXT)

What is the least round for the game played at Members Equity Stadium in from of 12,581 people?
SELECT MIN("Round") FROM table_79640 WHERE "Stadium" = 'members equity stadium' AND "Attendance" < '12,581'
SELECT MIN("Round") FROM "table_79640" WHERE "Attendance" < '12,581' AND "Stadium" = 'members equity stadium'