I really prefer formulas which can withstand the deletion/insertion of columns without exploding but this is a little trickier.
The basic rule here is that the 253s in the formula represent the number of columns from column C to the end of the spreadsheet - and the 3 is the reverse, number of columns from the start, so to re-locate the formula to C2, counting columns from E the 253s become 252s and the 3 becomes a 4, i.e.
as before, confirmed with CTRL+SHIFT+ENTER
There's probably a way to make this more robust and/or shorter....but I haven't worked that out so far
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