How many people watched episode number 13?
CREATE TABLE table_27547668_3 (viewers VARCHAR, _number VARCHAR)
SELECT viewers FROM table_27547668_3 WHERE _number = 13
### Context: CREATE TABLE table_27547668_3 (viewers VARCHAR, _number VARCHAR) ### Question: How many people watched episode number 13? ### Answer: SELECT viewers FROM table_27547668_3 WHERE _number = 13