24 into 13 best min fragment found: 5
  Cut up 24 sticks of length 13 like this:
    6 x (6 + 7)
    18 x (5 + 8)
  Reassemble as 13 sticks of length 24 like this:
    4 x (8 + 8 + 8)
    3 x (5 + 5 + 7 + 7)
    6 x (5 + 5 + 6 + 8)