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 | Chester City | 1–1 | Rotherham United | 15 November 1986 |
| Replay | Rotherham United | 1–1 | Chester City | 18 November 1986 |
| Replay | Chester City | 1–0 | Rotherham United | 24 November 1986 |
| 2 | Darlington | 2–1 | Mansfield Town | 16 November 1986 |
| 3 | Dartford | 1–1 | Enfield | 15 November 1986 |
| Replay | Enfield | 3–0 | Dartford | 18 November 1986 |
| 4 | Bournemouth | 7–2 | Fareham Town | 15 November 1986 |
| 5 | Bath City | 3–2 | Aylesbury United | 15 November 1986 |
| 6 | Bristol City | 3–1 | VS Rugby | 15 November 1986 |
| 7 | Preston North End | 5–1 | Bury | 15 November 1986 |
| 8 | Walsall | 2–0 | Chesterfield | 15 November 1986 |
| 9 | Woking | 1–1 | Chelmsford City | 15 November 1986 |
| Replay | Chelmsford City | 2–1 | Woking | 17 November 1986 |
| 10 | Notts County | 1–1 | Carlisle United | 15 November 1986 |
| Replay | Carlisle United | 0–3 | Notts County | 18 November 1986 |
| 11 | Middlesbrough | 3–0 | Blackpool | 15 November 1986 |
| 12 | Swindon Town | 4–0 | Farnborough Town | 15 November 1986 |
| 13 | Wrexham | 2–1 | Hartlepool United | 15 November 1986 |
| 14 | Chorley | 1–1 | Wolverhampton Wanderers | 15 November 1986 |
| Replay | Wolverhampton Wanderers | 1–1 | Chorley | 18 November 1986 |
| Replay | Chorley | 3–0 | Wolverhampton Wanderers | 24 November 1986 |
| 15 | Bristol Rovers | 0–0 | Brentford | 3 December 1986 |
| Replay | Brentford | 2–0 | Bristol Rovers | 6 December 1986 |
| 16 | Northampton Town | 3–0 | Peterborough United | 16 November 1986 |
| 17 | Spennymoor United | 2–3 | Tranmere Rovers | 15 November 1986 |
| 18 | Southend United | 4–1 | Halesowen Town | 15 November 1986 |
| 19 | Exeter City | 1–1 | Cambridge United | 15 November 1986 |
| Replay | Cambridge United | 2–0 | Exeter City | 19 November 1986 |
| 20 | Scunthorpe United | 2–0 | Southport | 15 November 1986 |
| 21 | Ton Pentre | 1–4 | Cardiff City | 15 November 1986 |
| 22 | Bromsgrove Rovers | 0–1 | Newport County | 15 November 1986 |
| 23 | Port Vale | 1–0 | Stafford Rangers | 15 November 1986 |
| 24 | Halifax Town | 1–1 | Bolton Wanderers | 15 November 1986 |
| Replay | Bolton Wanderers | 1–1 | Halifax Town | 18 November 1986 |
| Replay | Halifax Town | 1–3 | Bolton Wanderers | 24 November 1986 |
| 25 | Wealdstone | 1–1 | Swansea City | 15 November 1986 |
| Replay | Swansea City | 4–1 | Wealdstone | 24 November 1986 |
| 26 | Runcorn | 1–1 | Boston United | 15 November 1986 |
| Replay | Boston United | 1–2 | Runcorn | 19 November 1986 |
| 27 | York City | 3–1 | Crewe Alexandra | 15 November 1986 |
| 28 | Hereford United | 3–3 | Fulham | 15 November 1986 |
| Replay | Fulham | 4–0 | Hereford United | 24 November 1986 |
| 29 | Bishop's Stortford | 1–1 | Colchester United | 15 November 1986 |
| Replay | Colchester United | 2–0 | Bishop's Stortford | 18 November 1986 |
| 30 | Kettering Town | 0–3 | Gillingham | 15 November 1986 |
| 31 | Aldershot | 1–0 | Torquay United | 15 November 1986 |
| 32 | Wigan Athletic | 3–1 | Lincoln City | 15 November 1986 |
| 33 | Nuneaton Borough | 0–3 | Rochdale | 15 November 1986 |
| 34 | Woodford Town | 0–1 | Orient | 15 November 1986 |
| 35 | Slough Town | 1–1 | Bognor Regis Town | 15 November 1986 |
| Replay | Bognor Regis Town | 0–1 | Slough Town | 18 November 1986 |
| 36 | Whitby Town | 2–2 | Doncaster Rovers | 15 November 1986 |
| Replay | Doncaster Rovers | 3–2 | Whitby Town | 18 November 1986 |
| 37 | Telford United | 3–0 | Burnley | 15 November 1986 |
| 38 | Frickley Athletic | 0–0 | Altrincham | 15 November 1986 |
| Replay | Altrincham | 4–0 | Frickley Athletic | 18 November 1986 |
| 39 | Welling United | 1–1 | Maidstone United | 15 November 1986 |
| Replay | Maidstone United | 4–1 | Welling United | 24 November 1986 |
| 40 | Caernarfon Town | 1–0 | Stockport County | 15 November 1986 |
Question:
Scunthorpe United as the home team has what tie number?
Answer:
20.0