by november of 1940 when the area was sealed, how many restrictions are estimated to have lived in the jewish quarter in warsaw?

It was established by the German authorities in November 1940; within the new General Government territory of German-occupied Poland. Over 400,000 Jews were imprisoned there, in an area of 3.4 km2 (1.3 sq mi), with an average of 9.2 persons per room, barely subsisting on meager food rations