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:
| Home team | Home team score | Away team | Away team score | Venue | Crowd | Date |
| --- | --- | --- | --- | --- | --- | --- |
| Richmond | 16.9 (105) | St Kilda | 16.14 (110) | Punt Road Oval | 15000.0 | 18 August 1956 |
| Fitzroy | 9.16 (70) | Hawthorn | 10.17 (77) | Brunswick Street Oval | 7500.0 | 18 August 1956 |
| Essendon | 14.13 (97) | Geelong | 9.15 (69) | Windy Hill | 16500.0 | 18 August 1956 |
| Collingwood | 9.6 (60) | Melbourne | 10.13 (73) | Victoria Park | 31089.0 | 18 August 1956 |
| Carlton | 6.9 (45) | Footscray | 8.14 (62) | Princes Park | 44878.0 | 18 August 1956 |
| South Melbourne | 13.9 (87) | North Melbourne | 7.13 (55) | Lake Oval | 10000.0 | 18 August 1956 |
Question:
What is the sum of crowd(s) at princes park?
Answer:
44878.0