CREATE TABLE table_23224961_2 (unterfranken_west VARCHAR(255), oberfranken_ost VARCHAR(255))
When wacker marktredwitz is the oberfranken ost how many unterfranken wests are there?
    
SQL: SELECT COUNT(unterfranken_west) FROM table_23224961_2 WHERE oberfranken_ost = "Wacker Marktredwitz"