Great Deal Meaning

(idiomatic) A large number or amount.

Example: 1977, Agatha Christie, An Autobiography, Part II, chapter4:
  Mind you, clothes were clothes in those days. There was a great deal of them, lavish both in material and in workmanship.
1996, Kevin Hogan, The psychology of persuasion (page 60)
  Physicians wield a great deal of power.
2008, Andrzej Nowak, History and geopolitics: a contest for Eastern Europe (page 195)
  The low-keyed vision of Poland as a small and humble supplicant of the European Union still has a great deal of supporters.