CREATE TABLE table_37529 ("Week" FLOAT, "Date" CLOB, "Opponent" CLOB, "Result" CLOB, "Record" CLOB, "Game Site" CLOB, "Attendance" FLOAT)

Result of w 21 7 had what average week?
SELECT AVG("Week") FROM table_37529 WHERE "Result" = 'w 21–7'
SELECT AVG("Week") FROM "table_37529" WHERE "Result" = 'w 21–7'