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_21 (laps INTEGER, start VARCHAR, qual VARCHAR)
### Question:
What's the average number of Laps, that had a start of 25, with a Qual of 138.063?
### Answer:
SELECT AVG(laps) FROM table_name_21 WHERE start = "25" AND qual = "138.063"