This happens to me more often than you'd think, so a shortcut would be a help!
A client (or sometimes a colleague) will present a column of numbers on Excel and note that they have claimed £x from it, but make no mention of which numbers have been used.
Case in point, a client gives me a list of 50+ items all neatly laid out. They tell me '£2,895 of these expenses I think are private'. Great, but which ones are they?!? Can Excel somehow find me the cells that would add up to that total? Or am I asking too much :)
Otherwise it is a bit of trial and error (that £3,000 expense clearly doesn't feature, but a lot of them are well under £2,895).