conversations.from: human
conversations.value: Can you guide me through solving this problem: James binges on Cheezits and eats 3 bags that are 2 ounces each.  There are 150 calories in an ounce of Cheezits.  He then goes for a 40-minute run and burns 12 calories per minute.  How many excess calories did he eat?
conversations.from: assistant
conversations.value: He ate 2*3=6 ounces of cheez its
  That means he ate 6*150=900 calories
  He burned 40*12=480 calories
  So he ate an excess of 900-480=420 calories