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partition.15.4
1
15 into 4 best min fragment found: 13/7
2
Cut up 15 sticks of length 4 like this:
3
1 x (2 + 2)
4
14 x (13/7 + 15/7)
5
Reassemble as 4 sticks of length 15 like this:
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2 x (15/7 + 15/7 + 15/7 + 15/7 + 15/7 + 15/7 + 15/7)
7
2 x (13/7 + 13/7 + 13/7 + 13/7 + 13/7 + 13/7 + 13/7 + 2)