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:
| Week | Date | Opponent | Result | Attendance |
| --- | --- | --- | --- | --- |
| 1.0 | September 4, 1988 | at Indianapolis Colts | W 17–14 | 57251.0 |
| 2.0 | September 11, 1988 | Los Angeles Raiders | W 38–35 | 46050.0 |
| 3.0 | September 18, 1988 | at New York Jets | L 45–3 | 64683.0 |
| 4.0 | September 25, 1988 | New England Patriots | W 31–6 | 38646.0 |
| 5.0 | October 2, 1988 | at Philadelphia Eagles | L 32–23 | 64692.0 |
| 6.0 | October 9, 1988 | Kansas City Chiefs | W 7–6 | 39134.0 |
| 7.0 | October 16, 1988 | at Pittsburgh Steelers | W 34–14 | 52229.0 |
| 8.0 | October 23, 1988 | at Cincinnati Bengals | L 44–21 | 54659.0 |
| 9.0 | October 30, 1988 | Washington Redskins | W 41–17 | 48781.0 |
| 10.0 | November 7, 1988 | Cleveland Browns | W 24–17 | 51467.0 |
| 11.0 | November 13, 1988 | at Seattle Seahawks | L 27–24 | 60446.0 |
| 12.0 | November 20, 1988 | Phoenix Cardinals | W 38–20 | 43843.0 |
| 13.0 | November 24, 1988 | at Dallas Cowboys | W 25–17 | 50845.0 |
| 14.0 | December 4, 1988 | Pittsburgh Steelers | L 37–34 | 47791.0 |
| 15.0 | December 11, 1988 | Cincinnati Bengals | W 41–6 | 50269.0 |
| 16.0 | December 18, 1988 | at Cleveland Browns | L 28–23 | 74610.0 |
Question:
What is Attendance, when Opponent is Pittsburgh Steelers?
Answer:
47791.0