How much is $100 US in Greece?

I'm curious to know, how much would $100 US dollars be worth in Greece? I understand that exchange rates can fluctuate, but what's the current conversion rate? It's important for me to understand the financial implications when traveling or making transactions in Greece. Could you provide a rough estimate of the value of $100 USD in Greek currency? Additionally, is there a recommended way to exchange currency or use credit cards in Greece to avoid additional fees or unfavorable exchange rates?