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 | Attendance |
| --- | --- | --- | --- | --- |
| 1 | Bristol Rovers | 1 – 0 | Southampton | 11920.0 |
| 2 | Cardiff City | 2 – 0 | Wolverhampton Wanderers | 15339.0 |
| 3 | Sheffield United | 0 – 0 | Middlesbrough | 22210.0 |
| replay | Middlesbrough | 1 – 0 | Sheffield United | 28108.0 |
| 4 | Liverpool | 1 – 2 | Barnsley | 42449.0 |
| 5 | Manchester United | 4 – 0 | Arsenal | 75550.0 |
| 6 | Preston North End | 0 – 1 | Portsmouth | 11840.0 |
| 7 | Coventry City | 0 – 5 | West Bromwich Albion | 28163.0 |
| 8 | Chelsea | 3 – 1 | Huddersfield Town | 41324.0 |
Question:
How many attended tie number 3?
Answer:
22210.0