hundred million

1. Origins, structure, and basic meaning

• Structure: 億 is read おく and represents the numerical unit 100,000,000.
• Basic usage: 一億 is ten thousand times ten thousand; for an amount of money, a unit such as 円 follows it.

2. Common pitfalls and similar expressions

• Exact and approximate amounts
  • 数億円 means several hundred million yen without specifying an exact number of hundreds of millions. One billion corresponds to 十億, so distinguish the numerical scales.