conversations.from: human
conversations.value: Explain how to solve this math problem: Lucca bought 200 pieces of bread. Lucca ate 1/4 of the pieces of bread in one day, and 2/5 of the remaining pieces the next day. If he ate half of the remaining pieces on the third day, calculate how many pieces of bread are remaining.
conversations.from: assistant
conversations.value: On the first day, Lucca ate 1/4*200 = 50 pieces.
  The number of pieces remaining after the first day is 200-50 = 150
  On the second day, Lucca ate 2/5*150 = 60 pieces of bread.
  The pieces of bread that remained after the second day is 150-60 = 90
  If Lucca ate half of the remaining pieces of bread on the third day, he ate 1/2*90 = 45 pieces.
  The pieces of bread that are remaining after the third day are 90-45=45.