> people in places like Zambia probably do not know how to write in numbers in English (or are not very fluent) and also probably do not know how to say the num

> people in places like Zambia probably do not know how to write in numbers in English (or are not very fluent) and also probably do not know how to say the numbers in English. Don't know where you get this impression from; based on my first-hand experience, it is very likely wrong. If you are referring to people who are illiterate in English, fair enough (although even then they most likely can say the numbers in English). But then you would need to check the rate of illiteracy in Zambia (and their language of business) before making a blanket statement like above