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:
| Date | Visitor | Score | Home | Record | Attendance |
| --- | --- | --- | --- | --- | --- |
| September 30 | New York Giants | 38-21 | San Francisco 49ers | 0-1-0 | 41751.0 |
| October 7 | Los Angeles Rams | 33-30 | San Francisco 49ers | 1-1-0 | 56489.0 |
| October 14 | San Francisco 49ers | 31-7 | Chicago Bears | 1-2-0 | 47526.0 |
| October 21 | San Francisco 49ers | 20-17 | Detroit Lions | 1-3-0 | 55662.0 |
| October 28 | Chicago Bears | 38-21 | San Francisco 49ers | 1-4-0 | 52612.0 |
| November 4 | Detroit Lions | 17-13 | San Francisco 49ers | 1-5-0 | 46708.0 |
| November 11 | San Francisco 49ers | 30-6 | Los Angeles Rams | 1-6-0 | 69828.0 |
| November 18 | San Francisco 49ers | 17-16 | Green Bay Packers | 2-6-0 | 17986.0 |
| November 25 | San Francisco 49ers | 10-10 | Philadelphia Eagles | 2-6-1 | 19326.0 |
| December 2 | San Francisco 49ers | 20-17 | Baltimore Colts | 3-6-1 | 37227.0 |
| December 8 | Green Bay Packers | 38-20 | San Francisco 49ers | 4-6-1 | 32433.0 |
| December 16 | Baltimore Colts | 30-17 | San Francisco 49ers | 5-6-1 | 43791.0 |
Question:
How many people went to the game that had 17-13?
Answer:
46708.0