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_24 (enrollment INTEGER, _number___county VARCHAR)
### Question:
What's the enrollment at 41 Johnson?
### Answer:
SELECT AVG(enrollment) FROM table_name_24 WHERE _number___county = "41 johnson"