CREATE TABLE table_57223 ("Home team" TEXT, "Home team score" TEXT, "Away team" TEXT, "Away team score" TEXT, "Venue" TEXT, "Crowd" FLOAT, "Date" TEXT)

When an away team scored 10.8 (68), what was the crowd size?
SELECT "Crowd" FROM table_57223 WHERE "Away team score" = '10.8 (68)'
SELECT "Crowd" FROM "table_57223" WHERE "Away team score" = '10.8 (68)'