How many sols equal a dollar?

I'm curious, could you please clarify something for me? I've been trying to wrap my head around the conversion rate between solana, or sols as they're often called, and the US dollar. It seems like the exchange rate is constantly fluctuating, making it quite challenging to keep track of. Could you possibly explain how many sols are currently equivalent to one dollar? It would be greatly appreciated if you could provide me with a general idea or perhaps a tool or resource that I can refer to for real-time updates on this matter. Thank you in advance for your assistance.