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partition.21.9
1
21 into 9 best min fragment found: 15/4
2
Cut up 21 sticks of length 9 like this:
3
3 x (9/2 + 9/2)
4
18 x (15/4 + 21/4)
5
Reassemble as 9 sticks of length 21 like this:
6
3 x (21/4 + 21/4 + 21/4 + 21/4)
7
6 x (15/4 + 15/4 + 15/4 + 9/2 + 21/4)