CREATE TABLE table_73396 ("State  ( class ) " TEXT, "Vacator" TEXT, "Reason for change" TEXT, "Successor" TEXT, "Date of successors formal installation" TEXT)

What is the total number of successors when the vacator was William North ( F )
SELECT COUNT("Successor") FROM table_73396 WHERE "Vacator" = 'William North ( F )'
SELECT COUNT("Successor") FROM "table_73396" WHERE "Vacator" = 'William North ( F )'