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 | Enfield | 3–0 | Wembley | 22 November 1980 |
| 2 | Blackpool | 4–0 | Fleetwood Town | 22 November 1980 |
| 3 | Chester | 1–2 | Barnsley | 22 November 1980 |
| 4 | Darlington | 0–2 | Bury | 22 November 1980 |
| 5 | Barnet | 2–2 | Minehead | 22 November 1980 |
| Replay | Minehead | 1–2 | Barnet | 25 November 1980 |
| 6 | Burnley | 1–0 | Scarborough | 22 November 1980 |
| 7 | Yeovil Town | 2–1 | Farnborough Town | 22 November 1980 |
| 8 | Reading | 1–2 | Fulham | 22 November 1980 |
| 9 | Walsall | 3–0 | Stafford Rangers | 22 November 1980 |
| 10 | Gillingham | 2–1 | Dagenham | 22 November 1980 |
| 11 | Northwich Victoria | 1–1 | Huddersfield Town | 22 November 1980 |
| Replay | Huddersfield Town | 6–0 | Northwich Victoria | 25 November 1980 |
| 12 | Lincoln City | 1–0 | Gateshead | 22 November 1980 |
| 13 | Swindon Town | 3–2 | Weymouth | 22 November 1980 |
| 14 | Tranmere Rovers | 0–0 | York City | 22 November 1980 |
| Replay | York City | 1–2 | Tranmere Rovers | 25 November 1980 |
| 15 | Stockport County | 0–0 | Sheffield United | 22 November 1980 |
| Replay | Sheffield United | 3–2 | Stockport County | 25 November 1980 |
| 16 | Wycombe Wanderers | 0–3 | Bournemouth | 22 November 1980 |
| 17 | Kidderminster Harriers | 1–1 | Millwall | 22 November 1980 |
| Replay | Millwall | 1–0 | Kidderminster Harriers | 25 November 1980 |
| 18 | Brentford | 2–2 | Addlestone & Weybridge Town | 22 November 1980 |
| Replay | Brentford | 2–0 | Addlestone & Weybridge Town | 25 November 1980 |
| 19 | Northampton Town | 1–4 | Peterborough United | 22 November 1980 |
| 20 | Plymouth Argyle | 2–0 | Newport County | 22 November 1980 |
| 21 | Hull City | 2–1 | Halifax Town | 22 November 1980 |
| 22 | Wimbledon | 7–2 | Windsor & Eton | 22 November 1980 |
| 23 | Southend United | 0–1 | Hereford United | 22 November 1980 |
| 24 | Exeter City | 5–0 | Leatherhead | 22 November 1980 |
| 25 | Scunthorpe United | 3–1 | Hartlepool United | 22 November 1980 |
| 26 | Blyth Spartans | 2–1 | Burton Albion | 22 November 1980 |
| 27 | Mansfield Town | 3–1 | Rochdale | 22 November 1980 |
| 28 | Port Vale | 4–2 | Bradford City | 22 November 1980 |
| 29 | Torquay United | 2–0 | Barton Rovers | 22 November 1980 |
| 30 | Workington | 0–0 | Carlisle United | 22 November 1980 |
| Replay | Carlisle United | 4–1 | Workington | 1 December 1980 |
| 31 | Kettering Town | 1–1 | Maidstone United | 22 November 1980 |
| Replay | Maidstone United | 0–0 | Kettering Town | 26 November 1980 |
| Replay | Maidstone United | 3–1 | Kettering Town | 1 December 1980 |
| 32 | Wigan Athletic | 2–2 | Chesterfield | 22 November 1980 |
| Replay | Chesterfield | 2–0 | Wigan Athletic | 25 November 1980 |
| 33 | Boston United | 0–4 | Rotherham United | 22 November 1980 |
| 34 | Harlow Town | 0–2 | Charlton Athletic | 22 November 1980 |
| 35 | Colchester United | 3–0 | Portsmouth | 22 November 1980 |
| 36 | Gravesend & Northfleet | 1–2 | St Albans City | 22 November 1980 |
| 37 | Burscough | 1–2 | Altrincham | 22 November 1980 |
| 38 | Mossley F.C. | 1–0 | Crewe Alexandra | 22 November 1980 |
| 39 | Sutton Coldfield Town | 0–2 | Doncaster Rovers | 22 November 1980 |
| 40 | Oxford United | 1–0 | Aldershot | 22 November 1980 |
Question:
What is Tie no, when Home Team is "Hull City"?
Answer:
21.0