conversations.from: human
conversations.value: Find the answer to the math problem: Mr. Shaefer harvested 500 lychees in a carton and took them to the market. He sold half of them and took home the remaining number of lychees where they ate 3/5 of them. Calculate the number of lychees remaining.
conversations.from: assistant
conversations.value: At the market, Mr. Shaefer sold half of the lychees, which is 1/2*500 = 250
  The remaining number of lychees is 500-250 = 250
  At home, they ate 3/5*250 = 150 lychees.
  The total number of lychees remaining is 250-150 = 100