CREATE TABLE table_54217 ("Character" TEXT, "Position" TEXT, "Actor" TEXT, "First Episode" TEXT, "Final Episode" TEXT, "Duration" TEXT, "Final Episode Count" FLOAT)

What is the average number for a final episode featuring maxine valera?
SELECT AVG("Final Episode Count") FROM table_54217 WHERE "Character" = 'maxine valera'
SELECT AVG("Final Episode Count") FROM "table_54217" WHERE "Character" = 'maxine valera'