Number + 笔 + 金/钱/款
The classifier 笔 (bǐ) is used to count sums of money, transactions, or deals. While 笔 literally means "pen," as a measure word it specifically quantifies financial amounts. For example, 一笔金 means "a sum of money."
他刚收到一笔奖金,打算带家人去旅行。
Tā gāng shōu dào yì bǐ jiǎngjīn, dǎsuàn dài jiārén qù lǚxíng.
He just received a bonus and plans to take his family on a trip.
这笔钱你先存着,以后会用到的。
Zhè bǐ qián nǐ xiān cún zhe, yǐhòu huì yòng dào de.
Save this money for now; you'll need it later.
公司最近谈成了一笔很大的生意。
Gōngsī zuìjìn tán chéng le yì bǐ hěn dà de shēngyì.
The company recently closed a very big deal.