user: Question: How much is the sum of every crowd in attendance when the away score was 7.13 (55) for Richmond?
Columns: ['Home team', 'Home team score', 'Away team', 'Away team score', 'Venue', 'Crowd', 'Date']
Types: ['text', 'text', 'text', 'text', 'text', 'real', 'text']
Sample row: ['St Kilda', '8.15 (63)', 'South Melbourne', '7.13 (55)', 'Junction Oval', 22000.0, '14 May 1927']
SQL:

assistant: SELECT SUM("Crowd") FROM "Table" WHERE "Away team score" = '7.13 (55)' AND "Away team" = 'Richmond';