conversations.from: human
conversations.value: I need help with this problem:
  Sally reads 10 pages of a book on weekdays and 20 pages on weekends. If it takes 2 weeks for Sally to finish her book, how many pages that book has?
conversations.from: assistant
conversations.value: Two weeks has 5*2=10 weekdays.
  Two weeks has 2*2=4 weekends.
  On weekdays, she reads 10*10=100 pages in total.
  On weekends, she reads 20*4=80 pages in total.
  So the book has 100+80=180 pages.