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