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_46 (band INTEGER, power__w_ INTEGER)
### Question:
What Band number has a Power (W) of 400 or less?
### Answer:
SELECT SUM(band) FROM table_name_46 WHERE power__w_ < 400