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_57 (seats INTEGER, model VARCHAR)
### Question:
How many seats does the BTC-5 model have?
### Answer:
SELECT SUM(seats) FROM table_name_57 WHERE model = "btc-5"