conversations.from: human
conversations.value: Can you guide me through solving this problem: John's grill messes up and burns half his steak.  He eats 80% of what isn't burned.  If the steak was originally 30 ounces how much steak did he eat?
conversations.from: assistant
conversations.value: There were 30*.5=15 ounces of unburnt steak
  So he ate 15*.8=12 ounces of steak