text: 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_2857352_3 (network VARCHAR, virtual_channel VARCHAR)
  ### Question:
  How many networks run on virtual channel 23.4?
  ### Answer:
  SELECT COUNT(network) FROM table_2857352_3 WHERE virtual_channel = "23.4"