Question: Name the number of population density 2010 for duque de caxias
Schema: create table table_14986292_1 (population_density_2010___km²_ varchar, administrative_division varchar, PRIMARY KEY (population_density_2010___km²_))
SQL: select count(population_density_2010___km²_) from table_14986292_1 where administrative_division = "duque de caxias"