CREATE TABLE table_name_72 (points_for INT, points_against VARCHAR, points VARCHAR)

What is the average Points For when there are Points Against more than 780, and Points smaller than 0?
SELECT AVG(points_for) FROM table_name_72 WHERE points_against > 780 AND points < 0
SELECT AVG("points_for") FROM "table_name_72" WHERE "points" < 0 AND "points_against" > 780