I have range of cells that are the same right now, and they add up to
100:

7.142857
7.142857
7.142857
7.142857
7.142857
7.142857
7.142857
7.142857
7.142857
7.142857
7.142857
7.142857
7.142857
7.142857

100

I would like to be able to change on of those values, and the others
adjust to still add up to 100. Any ideas?