conversations.from: human
conversations.value: I would love to understand how to solve this problem: 4 friends went to buy from a clothes shop. Every item was 50% off.  All four friends decided to buy a t-shirt. The original price of the t-shirt was 20 dollars. How much money did they spend in total?
  Can you explain?
conversations.from: assistant
conversations.value: After the 50% discount, the t-shirt cost 20 * 0.5 = $10.
  So in all, the 4 friends spent 4 * $10 = $40.