conversations.from: human
conversations.value: This math problem has got me stumped: Andrew's father buys a package of 100 masks. Andrew lives with his 2 parents and 2 siblings. All members of Andrew's family change masks every 4 days. How many days will it take to finish the pack of masks?
  Can you show me the way?
conversations.from: assistant
conversations.value: Andrew's family consists of 1 + 2 + 2 = 5 people.
  Each of Andrew's family members uses 100 masks / 5 = 20 masks.
  With everyone wearing a mask every 4 days, the masks will last 20 masks * 4 days/mask = 80 days.