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_142573_1 (clock_rate__mhz_ VARCHAR, bandwidth__mb_s_ VARCHAR)
### Question:
Name the number of clock rate mhz when bandwidth mb/s is 2400
### Answer:
SELECT COUNT(clock_rate__mhz_) FROM table_142573_1 WHERE bandwidth__mb_s_ = 2400