Question: What is the total number of dates of successor formal installation when the vacator was Joshua Clayton ( F )?
Schema: create table table_224839_3 (date_of_successors_formal_installation varchar, vacator varchar, PRIMARY KEY (date_of_successors_formal_installation))
SQL: select count(date_of_successors_formal_installation) from table_224839_3 where vacator = "joshua clayton ( f )"