Below is an context that describes a sql query, paired with an question that provides further information. Write an answer that appropriately completes the request.  # noqa: E501
### Context:
CREATE TABLE table_name_18 (points VARCHAR, chassis VARCHAR)
### Question:
What is the total points of teams using a ligier js11/15 chassis?
### Answer:
SELECT COUNT(points) FROM table_name_18 WHERE chassis = "ligier js11/15"