Payment in a single currency

My site has 3 languages ??and 2 currencies. (TR-DE-EN) (TRY-EUR) In DE and EN languages, product prices are displayed in EUR and collections are made from this unit on the payment page. However, the brokerage house that I collect with a credit card only allows me to collect in TRY. In DE and EN languages, I want the product prices to be displayed in EUR, but only in TRY at the last stage, that is, on the payment page. How can I do that?

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