Why don’t countries condense their units of currency?

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When the lowest amount of currency you could possibly buy anything with is so high, why don’t countries
“condense” the value of their currency? For example, [12 eggs in Indonesia costs 25,544.06 Rp (their local currency)](https://www.numbeo.com/cost-of-living/country_price_rankings?itemId=11) why don’t they condense their currency so it only costs 4-5 units of currency? Wouldn’t it make the math easier for people?

In: Economics