conversations.from: human
conversations.value: Can you explain how to solve this math problem: In a fundraiser car wash activity, the 5th graders raised $147 on Friday. On Saturday, they made $7 more than twice their Friday earnings. Their earnings on Sunday are $78 more than their earnings on Friday. How much did they earn in three days?
conversations.from: assistant
conversations.value: Twice their Friday's earnings is $147 x 2 = $294.
  So, their Saturday earnings was $294 + $7 = $301.
  Their Sunday earnings was $147 + $78 = $225.
  Therefore, their total earnings in three days was $147 + $301 + $225 = $673.