Today's KRW To USD exchange rate：

1 KRW is equal to 0.0007 USD（1 KRW = 0.0007 USD），So how much USD can 5645 KRW be exchanged for?

We can use the following formula to calculate：

5645 KRW * 0.0007 USD / 1 KRW = 3.9515 USD

So, based on the exchange rate, 5645 KRW can be converted to 3.9515 USD.

Attention: This calculation result is for reference only. Please refer to the actual transaction price of the bank for actual exchange.