19 into 4: min fragment 17/9   [v1-66-g4e22cc3]
  Cut up 19 sticks of length 4 like this:
    18 x (19/9 + 17/9)
    1 x (2 + 2)
  Reassemble as 4 sticks of length 19 like this:
    2 x (19/9 + 19/9 + 19/9 + 19/9 + 19/9 + 19/9 + 19/9 + 19/9 + 19/9)
    2 x (2 + 17/9 + 17/9 + 17/9 + 17/9 + 17/9 + 17/9 + 17/9 + 17/9 + 17/9)