Eli5 Why do some countries measure their currencies in large units?

Question

For example in Vietnam, lunch can be bought for 50,000 VD and in South Korea, apartments can cost several MILLION Won. Why do some countries use such large denominations?

In: Economics

Answer 1

Wouldn’t those be examples of *small* units though?

A currency with “large” units would be (for example) Bitcoin, where lunch would cost like 0.0000001 Bitcoin.