What about the selling rate for US dollar in notes today?

今天的美圆售价怎么样？

The buying rate of U.S. dollar notes is 860 yuan per hundred dollars.

美圆买入价是100美圆兑860元。

What's the dollar going for today?

美圆今天的售价是多少？

And how much will it be in Japanese currency?

换成日本币是多少？

How much would I change 300 Japanese yuan for?

300日圆可兑换多少钱？

What kind of currency do you want?

要哪种货币？

What kind of currency do you want to change for?

要换哪种货币？

In what denominations¹ do you prefer?

要什么面值的？

I'll want to know the exchange rate between U.S. dollars and RMB.

我想知道美元对人民币的兑换率。

Would you please give me some small change.

请你给我一些零票。

Would you mind changing the money for coppers²?

劳驾给我换成硬币。