It’s also cool to do this with savings pots. When people have a hard time saving, they’ll say things like “what’s the point in saving £10 a month towards X, that’s nothing”. I usually point out the annual figure, since a lot of people don’t think that way.
That said, personally I do this too much, and it can make it hard to spend and too enticing to save. But that’s a different topic…
And within 12 hours, have forgotten 90%