When wacker marktredwitz is the oberfranken ost how many unterfranken wests are there?
create table table_23224961_2 (unterfranken_west varchar, oberfranken_ost varchar, PRIMARY KEY (unterfranken_west))
select count(unterfranken_west) from table_23224961_2 where oberfranken_ost = "wacker marktredwitz"