user: Question: What is the average population of the region with a density less than 487, a rank of 9, and an area larger than 377944?
Columns: ['Rank', 'Country/Region', 'Population', 'Area (km 2 )', 'Density (Pop. per km 2 )']
Types: ['real', 'text', 'real', 'real', 'real']
Sample row: [1.0, 'Bangladesh', 152518015.0, 147570.0, 1034.0]
SQL:

assistant: SELECT AVG("Population") FROM "Table" WHERE "Density (Pop. per km 2 )" < 487.0 AND "Rank" = 9.0 AND "Area (km 2 )" > 377944.0;