conversations.from: human
conversations.value: Provide a step by step solution for the following math problem: There are many CDs in the store. The rock and roll CDs are $5 each, the pop CDs are $10 each, the dance CDs are $3 each, and the country CDs are $7 each. Julia wants to buy 4 of each, but she only has 75 dollars. How much money is she short?
conversations.from: assistant
conversations.value: Rock and Roll CDs will be 5*4 = 20 dollars.
  Pop CDs will be 10*4 = 40 dollars.
  Dance CDs will be 3*4 = 12 dollars.
  Country CDs will be 7*4 = 28 dollars.
  In total Julia would need 20+40+12+28 = 100 dollars.
  Julia is short 100-75 = 25 dollars.