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_40768 ( "Club" text, "Wins" real, "Losses" real, "Points For" real, "Points Against" real, "Percentage" real, "Points" real )

### 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_40768 WHERE "Points Against" > '780' AND "Points" < '0'