prompt: James gets bored with his game so decides to play a different one.  That game promises 100 hours of gameplay but 80% of that is boring grinding.  However, the expansion does add another 30 hours of enjoyable gameplay.  How much enjoyable gameplay does James get?
messages.content: James gets bored with his game so decides to play a different one.  That game promises 100 hours of gameplay but 80% of that is boring grinding.  However, the expansion does add another 30 hours of enjoyable gameplay.  How much enjoyable gameplay does James get?
messages.role: user
messages.content: The first game was 100*.8=<<100*.8=80>>80 hours of grinding
  So it was 100-80=<<100-80=20>>20 hours of good gameplay
  The expansion brought the time of good gameplay to 20+30=<<20+30=50>>50 hours
  #### 50
messages.role: assistant