> 4 (four) I mostly see this type of writing in formal settings like contracts, or in cheques I think it's also done (but I've never seen a cheque so not sure)

> 4 (four) I mostly see this type of writing in formal settings like contracts, or in cheques I think it's also done (but I've never seen a cheque so not sure). Now I have a chance to ask! Why do you write the same number twice? I always assumed it was to make reading easier with large numbers (not having to count groups of zeroes) or prevent writing errors (in formal contracts), but this is not a large number and HN has an edit system.