conversations.from: human
conversations.value: Find the answer to the math problem: Zoe wants to go on the field trip to Washington DC with her middle school this spring and the cost is $485. Her grandma gave her $250 toward her fees and she must earn the rest by selling candy bars. She makes $1.25 for every candy bar she sells. How many candy bars does Zoe need to sell to earn the money for the trip?
conversations.from: assistant
conversations.value: Since Zoe’s grandma gave her some money toward her trip, she needs to come up with $485 – $250 = $235.
  This means she must sell $235 / $1.25/candy bar = 188 candy bars.