conversations.from: human
conversations.value: I need help with this problem:
  James made $4000 in January.  The next month he made twice as much.  In March, however, James made $2000 less than in February.  How much has James made so far this year?
conversations.from: assistant
conversations.value: In February James made 4000 * 2 = 8000.
  In March James made 8000-2000 = 6000.
  In total for the year James has made 4000 + 8000 + 6000 = $18000.