conversations.from: human
conversations.value: Explain how to solve this math problem: A store decides to shut down and sell all of its inventory.  They have 2000 different items which would normally retail for $50.  They are offering an 80% discount and manage to sell 90% of the items.  They owed $15000 to their creditors.  How much money do they have left after the sale?
conversations.from: assistant
conversations.value: They sold 2000*.9=1800 items
  They offered a 50*.8=$40 discount
  That means that each item sold for 50-40=$10
  So they made 1800*10=$18,000
  So they had 18,000-15,000=$3,000 leftover