CREATE TABLE table_51270 ("Home team" CLOB, "Home team score" CLOB, "Away team" CLOB, "Away team score" CLOB, "Venue" CLOB, "Crowd" FLOAT, "Date" CLOB)

How many people attended when the away team was Richmond?
SELECT SUM("Crowd") FROM table_51270 WHERE "Away team" = 'richmond'
SELECT SUM("Crowd") FROM "table_51270" WHERE "Away team" = 'richmond'