Woolwich had several Theater (structure) and Movie theater. The Theatre Royal in Beresford Street, later renamed Empire Theatre or Woolwich Empire, was the biggest. Dating from the 1830s, it was enlarged in the 1880s and 90s, seating about 2,000. It both served as a variety theater and cinema, ending up as a strip-joint. It was demolished in 1960. Shortly after 1900, three new theaters opened with a combined capacity of 4,430. The Century cinema, which faced Beresford Square, was previously known as Premier Cinema and Royal Arsenal Cinema. It was built in 1913 with 669 seats, closed in 1961 and demolished for redevelopment in the late 1960s. The Grand Theatre in Wellington Street opened in 1900 as a variety theater with a capacity of 1,680. It became the Woolwich Hippodrome in 1908 and a full-time cinema in 1923. Rebuilt in 1955 as the Regal Cinema, it closed in 1982, was then used as a nightclub and demolished in 2015. The Granada Cinema, Woolwich and the New Wine Church, both seating around 2,500, are imposing buildings from the 1930s that have both been converted into Pentecostalism churches.
Question: How many more seats did the Woolrich Empire seat than The Grand Theatre?
Answer: 320