找开

nǐ néng zhǎo kāi měi yuán de chāo piào ma

你能找开50美元的钞票吗？

Can you give me change for $50?

wǒ xiǎng bǎ zhè yīng bàng zhǎo kāi

我想把这20英镑找开。

I'd like to have a change for 20 pounds.