30 into 27 best min fragment found: 9
  Cut up 30 sticks of length 27 like this:
    18 x (12 + 15)
    12 x (9 + 9 + 9)
  Reassemble as 27 sticks of length 30 like this:
    9 x (15 + 15)
    18 x (9 + 9 + 12)