CREATE TABLE table_6804 ("Round" TEXT, "Year" FLOAT, "Team" TEXT, "Opponent" TEXT, "Goals" FLOAT, "Behinds" FLOAT)

What is the goals for Round 15?
SELECT "Goals" FROM table_6804 WHERE "Round" = 'round 15'
SELECT "Goals" FROM "table_6804" WHERE "Round" = 'round 15'