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:
| Tie no | Home team | Score 1 | Away team | Attendance | Date |
| --- | --- | --- | --- | --- | --- |
| 2.0 | Newcastle United | 0–1 | Birmingham City | 19276.0 | 07-11-1973 |
| 4.0 | Middlesbrough | 1–2 | Stoke City | 26068.0 | 06-11-1973 |
| 6.0 | Bolton Wanderers | 1–2 | Millwall | 13501.0 | 06-11-1973 |
| 7.0 | Ipswich Town | 2–1 | Fulham | 21400.0 | 14-11-1973 |
| 8.0 | Wolverhampton Wanderers | 2–1 | Tranmere Rovers | 14839.0 | 13-11-1973 |
| 9.0 | York City | 2–1 | Orient | 11152.0 | 06-11-1973 |
| 11.0 | Coventry City | 2–1 | Bristol City | 13049.0 | 06-11-1973 |
Question:
When the away team is Millwall, what is the total possible amount of tie numbers?
Answer:
1.0