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_19517448_3 ( yards_per_attempt VARCHAR, total_yards VARCHAR )

### Question ###
How many yards per attempt were there when total yards were 513?

### Accurate SQL ###

SELECT yards_per_attempt FROM table_19517448_3 WHERE total_yards = "513"