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_2351952_1 (railroad VARCHAR, numbers VARCHAR)
### Question:
How many railroads have the numbers 864-873?
### Answer:
SELECT COUNT(railroad) FROM table_2351952_1 WHERE numbers = "864-873"