CREATE TABLE table_40299 ("Week" FLOAT, "Date" CLOB, "Opponent" CLOB, "Result" CLOB, "Attendance" FLOAT)

Total weeks of 49,980 attendance?
SELECT SUM("Week") FROM table_40299 WHERE "Attendance" = '49,980'
SELECT SUM("Week") FROM "table_40299" WHERE "Attendance" = '49,980'