CREATE TABLE table_28312 ("Rank" FLOAT, "Player" TEXT, "Year" FLOAT, "Opponent" TEXT, "Passing yards" FLOAT, "Rushing yards" FLOAT, "Total offense" FLOAT)

How many rushing yards where there when the opponent was Indiana and there was 503 passing yards?
SELECT "Rushing yards" FROM table_28312 WHERE "Opponent" = 'Indiana' AND "Passing yards" = '503'
SELECT "Rushing yards" FROM "table_28312" WHERE "Opponent" = 'Indiana' AND "Passing yards" = '503'