CREATE TABLE table_30330 ("Year" FLOAT, "Team" CLOB, "Number" FLOAT, "Games" FLOAT, "Kicks" FLOAT, "Handballs" FLOAT, "Total Disposals" FLOAT, "Marks" FLOAT, "Tackles" FLOAT, "Goals" FLOAT, "Behinds" FLOAT, "Goal Accuracy %" CLOB, "Brownlow Medal Votes" FLOAT)

How many marks are there when tackles are 3?
SELECT "Marks" FROM table_30330 WHERE "Tackles" = '3'
SELECT "Marks" FROM "table_30330" WHERE "Tackles" = '3'