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_80 (viewers__m_ VARCHAR, rank__night_ VARCHAR, timeslot VARCHAR)
### Question:
What is the total number of Viewers with a Rank (Night) of n/a, and a Timeslot of 8:30 p.m.?
### Answer:
SELECT COUNT(viewers__m_) FROM table_name_80 WHERE rank__night_ = "n/a" AND timeslot = "8:30 p.m."