Question: How many stored does the American fast food restaurant franchise that sponsored Subway 400 have? 
Related documents: [0]  [DOC] The Subway 400 was the second race of the NASCAR Winston Cup Series season until 2004, held a week after the Daytona 500. This 400-mile (644 km) annual race was sponsored by Subway and was held at North Carolina Speedway ("The Rock") since 1966. From 1966 to 1995, a 500-mile (805-km) race was held; the race was known as the Peach Blossom 500 (1966), the Carolina 500 (1967–1985), and the Goodwrench 500 (1986–1995). In 1996, the race was shortened to its current distance of 400 miles; the 400 mile race was called the Goodwrench Service 400 (1996–1997), the GM Goodwrench Service Plus 400 (1998), the Dura Lube/Big K 400 (1999), the Dura Lube/Kmart 400 (2000), the Dura Lube 400 (2001), and the Subway 400 (2002–2004). [END] 
[1]  [DOC] Subway is a privately held American fast food restaurant franchise that primarily sells submarine sandwiches (subs) and salads. Subway is one of the fastest-growing franchises in the world and, as of June 2017, has approximately 45,000 stores located in more than 100 countries. More than half of the stores are located in the United States. It is the largest single-brand restaurant chain and the largest restaurant operator in the world. [END] 
Answer: 
45,000
45,000