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[*]Please use Ctrl + Shift + Enter in case you are only copying the Formula and pasting it any CELL.. instead of just ENTER..
[*]OR simply drag the formula downward.. using FILL HANDLE area (bottom right corner with a DOT in any CELL)
OR Press CTRL + D in just below cell where the formula exist
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still if above any suggestion is hard to implement.. you can download below updated file also..