Question: During the period in which gross sales totals for "The Show Girl Must Go On" reached $2,628,457, what did the numbers show for tickets sold/ available at the box office?
Schema: create table table_22123920_4 (tickets_sold___available varchar, gross_sales varchar, PRIMARY KEY (tickets_sold___available))
SQL: select tickets_sold___available from table_22123920_4 where gross_sales = "$2,628,457"