Below is the list of tables from the database along with their columns and datatype. Need to generate an accurate SQL query for the question.
Only use the columns present in the respective table. Only use the columns which are required to generate the SQL query. Only use table joins if required and not otherwise.

### Tables ###
TABLE: CREATE TABLE table_name_18 (seats_in_hamburgische_bürgerschaft VARCHAR, abbr VARCHAR)

### Question ###
WHAT IS THE TOTAL NUMBER OF SEATS IN Hamburgische Bürgerschaft WITH AN ABBR OF bündnis 90 / die grünen (gal)?

### Accurate SQL ###

SELECT COUNT(seats_in_hamburgische_bürgerschaft) FROM table_name_18 WHERE abbr = "bündnis 90 / die grünen (gal)"