Question:  The athletics competitions at the 2017 Southeast Asian Games in Kuala Lumpur took place at a stadium with a capacity of what?

Context paragraphs:
Water polo at the 2017 Southeast Asian Games: The water polo competitions at the 2017 Southeast Asian Games in Kuala Lumpur took place at National Aquatic Centre in Bukit Jalil.  It was one of four aquatic sports at the Games, along with diving, swimming, and synchronised swimming.

Rugby sevens at the 2017 Southeast Asian Games: The rugby sevens competitions at the 2017 Southeast Asian Games in Kuala Lumpur took place at the Petaling Jaya Stadium in Petaling Jaya.

Archery at the 2017 Southeast Asian Games: The archery competitions at the 2017 Southeast Asian Games in Kuala Lumpur took place at National Sports Complex, Malaysia in Kuala Lumpur.

Swimming at the 2017 Southeast Asian Games: The swimming competitions at the 2017 Southeast Asian Games in Kuala Lumpur took place at National Aquatic Centre in Bukit Jalil.  It was one of four aquatic sports at the games, along with diving, water polo, and synchronised swimming.  Meanwhile, marathon swimming was held at the Putrajaya Lake.

Muaythai at the 2017 Southeast Asian Games: The Muay Thai competitions at the 2017 Southeast Asian Games in Kuala Lumpur took place at MATRADE Exhibition and Convention Centre.

2017 Southeast Asian Games: The 2017 Southeast Asian Games (Malay: "Sukan Asia Tenggara 2017" ), officially known as the 29th Southeast Asian Games (Abbreviation: 29th SEA Games; Malay: "Sukan Asia Tenggara ke-29" ) and commonly known as Kuala Lumpur 2017 was a Southeast Asian multi-sport event that took place in Kuala Lumpur, Malaysia This was the sixth time that Malaysia hosted the games and its first time since 2001.  Previously, it had also hosted the 1965, 1971, 1977 and 1989 editions of the games.

Futsal at the 2017 Southeast Asian Games: The futsal competitions at the 2017 Southeast Asian Games in Kuala Lumpur took place at Panasonic Stadium in Shah Alam.

Bukit Jalil National Stadium: The Bukit Jalil National Stadium (Malay: Stadium Nasional Bukit Jalil) in Bukit Jalil, located in the National Sports Complex to the south of the city center of Malaysia's capital city, Kuala Lumpur, all-seater multi-purpose stadium and the home ground of the Malaysian national football team.  With a capacity of 87,411, it is the largest stadium in Malaysia, the second largest in Southeast Asia and the ninth largest football stadium in the world, only behind Gelora Bung Karno Stadium in Jakarta, Indonesia.

Diving at the 2017 Southeast Asian Games: The diving competitions at the 2017 Southeast Asian Games in Kuala Lumpur took place at National Aquatic Centre in Bukit Jalil.  It was one of four aquatic sports at the Games, along with swimming, water polo, and synchronised swimming.

Athletics at the 2017 Southeast Asian Games: The athletics competitions at the 2017 Southeast Asian Games in Kuala Lumpur took place at Bukit Jalil National Stadium in Bukit Jalil.  The marathon event meanwhile, was held in Putrajaya.

Supporting paragraphs: Athletics at the 2017 Southeast Asian Games Bukit Jalil National Stadium
Answer: 87,411