what is the difference in attendance from when the kansas city chiefs lost to the seattle seahwaks to when the won against them at the end of 1987?
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col : week | date | opponent | result | attendance row 1 : 1 | september 13, 1987 | san diego chargers | w 20–13 | 56,940 row 2 : 2 | september 20, 1987 | at seattle seahawks | l 43–14 | 61,667 row 3 : – | september 27, 1987 | minnesota vikings | canceled |  row 4 : 3 | october 4, 1987 | at los angeles raiders | l 35–17 | 10,708 row 5 : 4 | october 11, 1987 | at miami dolphins | l 42–0 | 25,867 row 6 : 5 | october 18, 1987 | denver broncos | l 26–17 | 20,296 row 7 : 6 | october 25, 1987 | at san diego chargers | l 42–21 | 47,972 row 8 : 7 | november 1, 1987 | at chicago bears | l 31–28 | 63,498 row 9 : 8 | november 8, 1987 | pittsburgh steelers | l 17–16 | 45,249 row 10 : 9 | november 15, 1987 | new york jets | l 16–9 | 40,718 row 11 : 10 | november 22, 1987 | green bay packers | l 23–3 | 34,611 row 12 : 11 | november 26, 1987 | at detroit lions | w 27–20 | 43,820 row 13 : 12 | december 6, 1987 | at cincinnati bengals | l 30–27 | 46,489 row 14 : 13 | december 13, 1987 | los angeles raiders | w 16–10 | 63,834 row 15 : 14 | december 19, 1987 | at denver broncos | l 20–17 | 75,053 row 16 : 15 | december 27, 1987 | seattle seahawks | w 41–20 | 20,370
what is the difference in attendance from when the kansas city chiefs lost to the seattle seahwaks to when the won against them at the end of 1987?
Week Date Opponent Result Attendance
1 September 13, 1987 San Diego Chargers W 20–13 56,940
2 September 20, 1987 at Seattle Seahawks L 43–14 61,667
– September 27, 1987 Minnesota Vikings canceled
3 October 4, 1987 at Los Angeles Raiders L 35–17 10,708
4 October 11, 1987 at Miami Dolphins L 42–0 25,867
5 October 18, 1987 Denver Broncos L 26–17 20,296
6 October 25, 1987 at San Diego Chargers L 42–21 47,972
7 November 1, 1987 at Chicago Bears L 31–28 63,498
8 November 8, 1987 Pittsburgh Steelers L 17–16 45,249
9 November 15, 1987 New York Jets L 16–9 40,718
10 November 22, 1987 Green Bay Packers L 23–3 34,611
11 November 26, 1987 at Detroit Lions W 27–20 43,820
12 December 6, 1987 at Cincinnati Bengals L 30–27 46,489
13 December 13, 1987 Los Angeles Raiders W 16–10 63,834
14 December 19, 1987 at Denver Broncos L 20–17 75,053
15 December 27, 1987 Seattle Seahawks W 41–20 20,370
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