Below is an context that describes a sql query, paired with an question that provides further information. Write an answer that appropriately completes the request.  # noqa: E501
### Context:
CREATE TABLE table_name_53 (gdp_per_capita__us INTEGER, literacy__2003_ VARCHAR, area__km²_ VARCHAR)
### Question:
Which GDP per capita (US$) (2004) has a Literacy (2003) of 90%, and an Area (km²) of 1247689.5?
### Answer:
SELECT AVG(gdp_per_capita__us) AS $___2004_ FROM table_name_53 WHERE literacy__2003_ = "90%" AND area__km²_ = 1247689.5