SELECT "Venue" FROM table_78109 WHERE "Away team score" = '8.7 (55)'
Where did the away team score 8.7 (55)?
CREATE TABLE table_78109 (
    "Home team" text,
    "Home team score" text,
    "Away team" text,
    "Away team score" text,
    "Venue" text,
    "Crowd" real,
    "Date" text
)