Below is the list of tables from the database along with their columns and datatype. Need to generate an accurate SQL query for the question.
Only use the columns present in the respective table. Only use the columns which are required to generate the SQL query. Only use table joins if required and not otherwise.

### Tables ###
TABLE: CREATE TABLE table_13110459_2 ( viewers__m_ VARCHAR, overall VARCHAR )

### Question ###
how many viewers (m) with overall being 91/101

### Accurate SQL ###

SELECT COUNT(viewers__m_) FROM table_13110459_2 WHERE overall = "91/101"