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_2 (frequency_mhz INTEGER, call_sign VARCHAR)
### Question:
What is the Frequency MHz for the station with a call sign of w224bn?
### Answer:
SELECT AVG(frequency_mhz) FROM table_name_2 WHERE call_sign = "w224bn"