Please read the following table in Markdown format and then answer the question according to the table. Table cells in one row are seperated by '|', and different rows are seperated by '
'.

Table:
| Week | Date | Opponent | Result | Attendance |
| --- | --- | --- | --- | --- |
| 1.0 | September 12, 1982 | Los Angeles Raiders | L 23-17 | 59748.0 |
| 2.0 | September 19, 1982 | at Denver Broncos | L 24-21 | 73899.0 |
| 3.0 | November 21, 1982 | at St. Louis Cardinals | W 31-20 | 38064.0 |
| 4.0 | November 28, 1982 | New Orleans Saints | L 23-20 | 51611.0 |
| 5.0 | December 2, 1982 | at Los Angeles Rams | W 30-24 | 58574.0 |
| 6.0 | December 11, 1982 | San Diego Chargers | L 41-37 | 55988.0 |
| 7.0 | December 19, 1982 | Atlanta Falcons | L 17-7 | 53234.0 |
| 8.0 | December 26, 1982 | at Kansas City Chiefs | W 26-13 | 24319.0 |
| 9.0 | January 2, 1983 | Los Angeles Rams | L 21-20 | 54256.0 |
Question:
What is the attendance in a week earlier than 4, and result is w 31-20?
Answer:
38064.0