question: What was the gross revenue (1986) when there were tickets sold/available of 24,000 / 24,000 (100%)?
answer: SELECT gross_revenue__1986_ FROM table_name_83 WHERE tickets_sold___available = "24,000 / 24,000 (100%)"
context: CREATE TABLE table_name_83 (gross_revenue__1986_ VARCHAR, tickets_sold___available VARCHAR)