conversations.from: human
conversations.value: Provide a step by step solution for the following math problem: Each purple book has 230 pages. Each orange book contains 510 pages. Mirella read 5 purple books and 4 orange books. How many more orange pages did she read than purple pages?
conversations.from: assistant
conversations.value: Purple = 5 * 230 = 1150 pages
  Orange = 4 * 510 = 2040 pages
  2040 - 1150 = 890
  Mirella read 890 more orange pages than purple pages.