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_40 (density__per_km²_ INTEGER, no_munic VARCHAR)
### Question:
What is the average Density of 53 No. munic.?
### Answer:
SELECT AVG(density__per_km²_) FROM table_name_40 WHERE no_munic = 53