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_name_86 ( rank INTEGER, goals VARCHAR, matches VARCHAR )

### Question ###
What is the mean rank number when goals are 230 and there are more than 535?

### Accurate SQL ###

SELECT AVG(rank) FROM table_name_86 WHERE goals = 230 AND matches > 535