conversations.from: human
conversations.value: Explain how to solve this math problem: Mrs. Watson is grading 120 final exams from her American History class.  On Monday, she grades 60% of the exams.  On Tuesday, she grades 75% of the remaining exams.  On Wednesday, how many more exams does she need to grade?
conversations.from: assistant
conversations.value: On Monday, Mrs. Watson grades 120 x 60% = 72 final exams.
  At the end of Monday, she has 120 - 72 = 48 exams left to grade.
  On Tuesday, she grades 48 x 75% = 36 final exams.
  On Wednesday, she has 48 - 36 = 12 exams left to grade.