Korean has two sets of numbers! (Il, e, sam... and hana, dul, set, ... ). When I worked for a Korean company, I heard the first more than the second, but I co

Korean has two sets of numbers! (Il, e, sam... and hana, dul, set, ... ). When I worked for a Korean company, I heard the first more than the second, but I could never work out what the right context was for each set of numbers. I could usually pick out the numbers up to 20 or so, which was all I really needed in a work context.