Below is the list of tables from the database along with their columns and datatype. Need to generate an accurate SQL query for the question.
Only use the columns present in the respective table. Only use the columns which are required to generate the SQL query. Only use table joins if required and not otherwise.

### Tables ###
TABLE: 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?

### Accurate SQL ###

SELECT AVG(laps) FROM table_name_21 WHERE start = "25" AND qual = "138.063"