CREATE TABLE table_37508 ("Week" FLOAT, "Date" TEXT, "Opponent" TEXT, "Result" TEXT, "Attendance" FLOAT)

In what Week were there less than 30,348 in Attendance with a Result of W 37-21?
SELECT SUM("Week") FROM table_37508 WHERE "Attendance" < '30,348' AND "Result" = 'w 37-21'
SELECT SUM("Week") FROM "table_37508" WHERE "Attendance" < '30,348' AND "Result" = 'w 37-21'