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_3660 ( "Series #" real, "Season #" real, "Title" text, "Directed by" text, "Written by" text, "Original air date" text, "Production code" text )

### Question ###
When 3.89 is the production code how many season numbers are there?

### Accurate SQL ###

SELECT COUNT("Season #") FROM table_3660 WHERE "Production code" = '3.89'