how many seating does Chicagoland Speedway have?
SELECT T2.Seating FROM race AS T1 JOIN track AS T2 ON T1.track_id   =   T2.track_id where T2.Name  =  'Chicagoland Speedway'
seating at Chicagoland Speedway refers to T2.Seating; JOIN operation is used to connect tables on related columns; WHERE clause to filter records where track name is Chicagoland Speedway;