Inflation is calculated through the price variations of several common
products like beans, fuel, rice, etc.
You don't need "the" before inflation. Also, variation and beans should be plural.
2022년 12월 8일
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The inflation is calculated through the price variation of several common products like beans, fuel, rice, etc.
almost perfect--just missing an s. You want to list of each product as a whole, so each product should be plural (beans), a collective noun (fish), or uncountable (fuel).