conversations.from: human
conversations.value: Can you give me some step-by-step instructions for this math problem: Isabella and Alexis went to the mall to buy some pants and dresses. Alexis bought 3 times more pants and dresses than Isabella. If Alexis bought 21 pairs of pants and 18 dresses, how many pairs of pants and dresses did Isabella buy in total?
conversations.from: assistant
conversations.value: The number of pants Isabella bought is 21 / 3 = 7 pairs of pants.
  The number of dresses Isabella bought is 18 / 3 = 6 dresses.
  The total number of pants and dresses Isabella bought is 7 + 6 = 13.