CREATE TABLE table_37636 ("Week" FLOAT, "Date" CLOB, "Opponent" CLOB, "Result" CLOB, "Record" CLOB, "Game Site" CLOB, "Attendance" CLOB)

Attendance of 55,340 had what opponent?
SELECT "Opponent" FROM table_37636 WHERE "Attendance" = '55,340'
SELECT "Opponent" FROM "table_37636" WHERE "Attendance" = '55,340'