Learn the Chinese numerals “百(bǎi)” “千(qiān)” and “万(wàn)”

Hi Zhānɡ Lì, zuótiān kàn yǎnchànɡhuì de rén duō ma?
Jenny: Hi 张丽，      昨天     看   演唱会           的 人    多   吗？

Hi Zhang Li, did a lot of people attend the concert yesterday?
Zhāng Lì: Hěn duō, dàgài yǒu wǔqiān rén.
张       丽：很  多， 大概   有    五千     人。

Zhang Li: There were a lot of people, probably around five thousand in total.
How many people attended the concert yesterday?
A. About 5,000
B. About 500
C. About 50,000