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 7, 1986 | Cincinnati Bengals | W 24–14 | 43430.0 |
| 2.0 | September 14, 1986 | at Seattle Seahawks | L 23–17 | 61068.0 |
| 3.0 | September 21, 1986 | Houston Oilers | W 27–13 | 43699.0 |
| 4.0 | September 28, 1986 | at Buffalo Bills | W 20–17 | 67555.0 |
| 5.0 | October 5, 1986 | Los Angeles Raiders | L 24–17 | 74430.0 |
| 6.0 | October 12, 1986 | at Cleveland Browns | L 20–7 | 71278.0 |
| 7.0 | October 19, 1986 | San Diego Chargers | W 42–41 | 55767.0 |
| 8.0 | October 26, 1986 | Tampa Bay Buccaneers | W 27–20 | 36230.0 |
| 9.0 | November 2, 1986 | at San Diego Chargers | W 24–23 | 48518.0 |
| 10.0 | November 9, 1986 | Seattle Seahawks | W 27–7 | 53268.0 |
| 11.0 | November 16, 1986 | at Denver Broncos | L 38–17 | 75745.0 |
| 12.0 | November 23, 1986 | at St. Louis Cardinals | L 23–14 | 29680.0 |
| 13.0 | November 30, 1986 | Buffalo Bills | L 17–14 | 31492.0 |
| 14.0 | December 7, 1986 | Denver Broncos | W 37–10 | 47019.0 |
| 15.0 | December 14, 1986 | at Los Angeles Raiders | W 20–17 | 60952.0 |
| 16.0 | December 21, 1986 | at Pittsburgh Steelers | W 24–19 | 47150.0 |
Question:
Which sum of week that had an attendance larger than 55,767 on September 28, 1986?
Answer:
4.0