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_2112766_1 (broadcast_date VARCHAR, viewers__in_millions_ VARCHAR)
### Question:
what is all the  broadcast date when viewers were 8.4 millions
### Answer:
SELECT COUNT(broadcast_date) FROM table_2112766_1 WHERE viewers__in_millions_ = "8.4"