I am trying to divide these values to get a number that represents opens to sent messages.

Here is the error I keep getting

> 
> You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '' at line 6"
> 
> 
> 

```
SELECT opens / sent
FROM (
    (
        SELECT COUNT(*)
        FROM Email_Open_Table AS opens
        WHERE open_time <= DATE_ADD(CURDATE(), INTERVAL '14' DAY)
        )
    ,(
        SELECT COUNT(*)
        FROM Email_Send_Table AS sent
        WHERE send_time <= DATE_ADD(CURDATE(), INTERVAL '14' DAY)
        )
    )

```