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_45345 ( "Week" real, "Date" text, "Opponent" text, "Location" text, "Final Score" text, "Attendance" text, "Record" text )

### Question ###
What is the average week number for games that had 28,800 fans in attendance?

### Accurate SQL ###

SELECT AVG("Week") FROM table_45345 WHERE "Attendance" = '28,800'