human
Considering the provided database schema and associated query, produce SQL code to retrieve the answer to the query. 
###Database Schema: No. in series, Title, Directed by, Written by, Original air date, Production code, U.S. viewers (million)
###Question: How many directors got 6.79 million U.S. viewers from their episodes?
gpt
SELECT COUNT Directed by FROM table WHERE U.S. viewers (million) = 6.79