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 | Away team | Date |
| --- | --- | --- | --- | --- |
| 1 | Southampton | 3–0 | Wigan Athletic | 25 January 1986 |
| 2 | Reading | 1–1 | Bury | 25 January 1986 |
| Replay | Bury | 3–0 | Reading | 28 January 1986 |
| 3 | Notts County | 1–1 | Tottenham Hotspur | 25 January 1986 |
| Replay | Tottenham Hotspur | 5–0 | Notts County | 29 January 1986 |
| 4 | Aston Villa | 1–1 | Millwall | 25 January 1986 |
| Replay | Millwall | 1–0 | Aston Villa | 29 January 1986 |
| 5 | Sheffield Wednesday | 5–0 | Orient | 25 January 1986 |
| 6 | Sunderland | 0–0 | Manchester United | 25 January 1986 |
| Replay | Manchester United | 3–0 | Sunderland | 29 January 1986 |
| 7 | Luton Town | 4–0 | Bristol Rovers | 25 January 1986 |
| 8 | Everton | 3–1 | Blackburn Rovers | 25 January 1986 |
| 9 | Sheffield United | 0–1 | Derby County | 25 January 1986 |
| 10 | Manchester City | 1–1 | Watford | 25 January 1986 |
| Replay | Watford | 0–0 | Manchester City | 3 February 1986 |
| Replay | Manchester City | 1–3 | Watford | 6 February 1986 |
| 11 | West Ham United | 0–0 | Ipswich Town | 25 January 1986 |
| Replay | Ipswich Town | 1–1 | West Ham United | 4 February 1986 |
| Replay | Ipswich Town | 0–1 | West Ham United | 6 February 1986 |
| 12 | Hull City | 2–3 | Brighton & Hove Albion | 25 January 1986 |
| 13 | Chelsea | 1–2 | Liverpool | 26 January 1986 |
| 14 | Arsenal | 5–1 | Rotherham United | 25 January 1986 |
| 15 | York City | 2–0 | Altrincham | 25 January 1986 |
| 16 | Peterborough United | 1–0 | Carlisle United | 25 January 1986 |
Question:
What is Tie No., when Away Team is "Manchester United"?
Answer:
6.0