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_1888051_1 (province VARCHAR, area__km²_ VARCHAR)
### Question:
when area (km²) is 1605.35, how many provinces are there?
### Answer:
SELECT COUNT(province) FROM table_1888051_1 WHERE area__km²_ = "1605.35"