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Arabic numerals?

At school we were taught that there are Arabic and Roman numerals. We still use Arabic numerals every day, for example, by writing the time or phone numbers. However, it can be very confusing as seeing the number '0' in an Arab country actually means '5'.
It turns out that the numbers used in Arabic countries today are very different from what we learnt about "Arabic numerals". 
The appearance of these numbers in Europe has evolved in a different direction than the appearance of the numbers in Arab countries, which, are much closer to their Indian origins.

When shopping in Egypt, it's common to see products without prices on. Especially in tourist destinations, where prices are bartered/negotiated. However, in local stores, supermarkets or souks, the ability to understand the price or the used by date is very useful.