CREATE TABLE table_40656 ("Week" FLOAT, "Date" CLOB, "Opponent" CLOB, "Result" CLOB, "Attendance" FLOAT)

How many were in attendance against the Oakland Raiders after week 7?
SELECT SUM("Attendance") FROM table_40656 WHERE "Opponent" = 'oakland raiders' AND "Week" > '7'
SELECT SUM("Attendance") FROM "table_40656" WHERE "Opponent" = 'oakland raiders' AND "Week" > '7'