Exactly, it's something that mass usage will solve, even if the folk song will not sound just the same with "a hundred klicks, a hundred klicks, I am five hundr

Exactly, it's something that mass usage will solve, even if the folk song will not sound just the same with "a hundred klicks, a hundred klicks, I am five hundred klicks away from home". Other languages often say just letters "k" or "km".