How much is 1 core in USDT?

Could you please clarify for me, how much does one core actually equate to in terms of USDT? I'm having some difficulty understanding the conversion rate between the two currencies. Could you provide a detailed explanation or perhaps a breakdown of the calculation process involved? It would be greatly appreciated if you could also consider any potential fluctuations in the exchange rate that might affect the final amount. Thank you for your assistance in this matter.