conversations.from: human
conversations.value: Can you explain how to solve this math problem: Mrs. Petersons bought 10 tumblers for $45 each. She paid with five $100 bills. How much change will Mrs. Petersons receive?
conversations.from: assistant
conversations.value: The 10 tumblers amount to $45 x 10 = $450.
  Mrs. Petersons paid $100 x 5 = $500.
  So, her change will be $500 - $450 = $50.