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_15077 ( "Episode" text, "First aired" text, "Entrepreneur(s)" text, "Company or product name" text, "Money requested (\u00a3)" real, "Investing Dragon(s)" text )

### Question ###
how much money was requested on the show which aired on 4 september 2011?

### Accurate SQL ###

SELECT SUM("Money requested (\u00a3)") FROM table_15077 WHERE "First aired" = '4 september 2011'