This is an example of meaning #2 below. Collins online dictionary https://www.collinsdictionary.com/dictionary/english/round-up round up verb (tr, adverb) 1. to gather (animals, suspects, etc) together to round ponies up 2. to raise (a number) to the nearest whole number or ten, hundred, or thousand above it Compare round down

“Round up” can also mean to change a number like 1.78 to the nearest higher whole number, 2.00. So, maybe before the Euro something cost 3.00; after the Euro, the cost in Euro’s would have been, say, 1.9 euros. But stores round up the 1.9 euro price to 2 euros — so the “rounding up” causes prices to get higher.

You're right. This has nothing to do with gathering together people or sheep or anything. It's a different meaning entirely when it refers to figures. If you have a figure of, say 9.87 and call it 10, you are rounding it up (to the nearest whole number). Likewise, if your figure is 10.06, you can round it down to 10. If you convert from one currency to another, people tend round up prices to the nearest sensible price. For example, today, the Swiss Franc is 0.89 Euros. If you round up that .89 to one whole Euro, that creates inflation.

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