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_72 ( points_for INTEGER, points_against VARCHAR, points VARCHAR )

### Question ###
What is the average Points For when there are Points Against more than 780, and Points smaller than 0?

### Accurate SQL ###

SELECT AVG(points_for) FROM table_name_72 WHERE points_against > 780 AND points < 0