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 | Game site | Record | Attendance |
| --- | --- | --- | --- | --- | --- | --- |
| 1.0 | September 2 | Cincinnati Bengals | W 20–17 | Mile High Stadium | 1–0 | 74178.0 |
| 2.0 | September 9 | at Chicago Bears | L 0–27 | Soldier Field | 1–1 | 54335.0 |
| 3.0 | September 16 | at Cleveland Browns | W 24–14 | Cleveland Stadium | 2–1 | 61980.0 |
| 4.0 | September 23 | Kansas City Chiefs | W 21–0 | Mile High Stadium | 3–1 | 74263.0 |
| 5.0 | September 30 | Los Angeles Raiders | W 16–13 | Mile High Stadium | 4–1 | 74833.0 |
| 6.0 | October 7 | at Detroit Lions | W 28–7 | Pontiac Silverdome | 5–1 | 55836.0 |
| 7.0 | October 15 | Green Bay Packers | W 17–14 | Mile High Stadium | 6–1 | 62546.0 |
| 8.0 | October 21 | at Buffalo Bills | W 37–7 | Rich Stadium | 7–1 | 31204.0 |
| 9.0 | October 28 | at Los Angeles Raiders | W 22–19 (OT) | Los Angeles Memorial Coliseum | 8–1 | 91020.0 |
| 10.0 | November 4 | New England Patriots | W 26–19 | Mile High Stadium | 9–1 | 74908.0 |
| 11.0 | November 11 | at San Diego Chargers | W 16–13 | Jack Murphy Stadium | 10–1 | 53162.0 |
| 12.0 | November 18 | Minnesota Vikings | W 42–21 | Mile High Stadium | 11–1 | 74716.0 |
| 13.0 | November 25 | Seattle Seahawks | L 24–27 | Mile High Stadium | 11–2 | 74922.0 |
| 14.0 | December 2 | at Kansas City Chiefs | L 13–16 | Arrowhead Stadium | 11–3 | 38494.0 |
| 15.0 | December 9 | San Diego Chargers | W 16–13 | Mile High Stadium | 12–3 | 74867.0 |
| 16.0 | December 15 | at Seattle Seahawks | W 31–14 | Kingdome | 13–3 | 64411.0 |
Question:
What week was the game played at Rich Stadium?
Answer:
8.0