8 into 7: min fragment 5/2   [v1-66-g4e22cc3]
  Cut up 8 sticks of length 7 like this:
    4 x (9/2 + 5/2)
    2 x (4 + 3)
    2 x (7/2 + 7/2)
  Reassemble as 7 sticks of length 8 like this:
    4 x (9/2 + 7/2)
    1 x (4 + 4)
    2 x (3 + 5/2 + 5/2)