三百万 (sānbǎiwàn): three million

Meanings

Zhè zuò chéngshì yǒu sānbǎiwàn rénkǒu.

This city has a population of three million.

Nà dòng fángzi zhí sānbǎiwàn.

That house is worth three million.

grammar

Chinese counts large numbers by 万 (10,000). So three million is 三百万 — literally 'three hundred ten-thousands' (300 × 10,000).

三 sān

百 bǎi

万 wàn