conversations.from: human
conversations.value: Marie ordered one chicken meal that costs $12, 5 packs of milk that costs $3 each, 4 apples that cost $1.50 each, and some boxes of pizza. Marie paid a total of $50. How many boxes of pizza did Marie order if each box costs $8.50?
  Give me a solution to this problem
conversations.from: assistant
conversations.value: Five packs of milk cost $3 x 5 = $15.
  Four apples cost $1.50 x 4 = $6.
  The total cost of the chicken meal, milk, and apples is $12 + $15 + $6 = $33.
  Thus, the boxes of pizza cost $50 - $33 = $17.
  Therefore, Marie ordered $17/$8.50 = 2 boxes of pizza.