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 | Record | Game Site | Attendance |
| --- | --- | --- | --- | --- | --- | --- |
| 1.0 | September 13, 1964 | at Minnesota Vikings | L 24–34 | 0–1 | Metropolitan Stadium | 35563.0 |
| 2.0 | September 20, 1964 | at Green Bay Packers | W 21–20 | 1–1 | Lambeau Field | 42327.0 |
| 3.0 | September 27, 1964 | Chicago Bears | W 52–0 | 2–1 | Memorial Stadium | 56537.0 |
| 4.0 | October 4, 1964 | Los Angeles Rams | W 35–20 | 3–1 | Memorial Stadium | 56537.0 |
| 5.0 | October 12, 1964 | St. Louis Cardinals | W 47–27 | 4–1 | Memorial Stadium | 60213.0 |
| 6.0 | October 18, 1964 | Green Bay Packers | W 24–21 | 5–1 | Memorial Stadium | 60213.0 |
| 7.0 | October 25, 1964 | at Detroit Lions | W 34–0 | 6–1 | Tiger Stadium | 57814.0 |
| 8.0 | November 1, 1964 | San Francisco 49ers | W 37–7 | 7–1 | Memorial Stadium | 60213.0 |
| 9.0 | November 8, 1964 | at Chicago Bears | W 40–24 | 8–1 | Wrigley Field | 47891.0 |
| 10.0 | November 15, 1964 | Minnesota Vikings | W 17–14 | 9–1 | Memorial Stadium | 60213.0 |
| 11.0 | November 22, 1964 | at Los Angeles Rams | W 24–7 | 10–1 | Los Angeles Memorial Coliseum | 72137.0 |
| 12.0 | November 29, 1964 | at San Francisco 49ers | W 14–3 | 11–1 | Kezar Stadium | 33642.0 |
| 13.0 | December 6, 1964 | Detroit Lions | L 14–31 | 11–2 | Memorial Stadium | 60213.0 |
Question:
 how many opponent with date being october 25, 1964
Answer:
1.0