conversations.from: human
conversations.value: The Kwik-e-Tax Center charges $50 for a federal return, $30 for a state return, and $80 for quarterly business taxes. If they sell 60 federal returns, 20 state returns, and 10 quarterly returns in one day, what was their total revenue for the day?
  How to solve this?
conversations.from: assistant
conversations.value: First find the total income from the federal returns: $50/return * 60 returns = $3000
  Then find the total income from the state returns: $30/return * 20 returns = $600
  Then find the total income from the quarterly returns: $80/return * 10 returns = $800
  Then add the income from each source to find their total income: $3000 + $600 + $800 = $4400