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? 
answer: SELECT tickets_sold___available FROM table_22123920_4 WHERE gross_sales = "$2,628,457"
context: CREATE TABLE table_22123920_4 (tickets_sold___available VARCHAR, gross_sales VARCHAR)