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_76 ( size INTEGER, ihsaa_class VARCHAR, location VARCHAR )

### Question ###
Which Size has an IHSAA Class of aa, and a Location of milan?

### Accurate SQL ###

SELECT SUM(size) FROM table_name_76 WHERE ihsaa_class = "aa" AND location = "milan"