亿

狗狗了， 亿=100000000， 8个 0，

北京房子， 均价 6 万/平方米， 好区 10万/平方米， 200 平方米 就是 2千万， 20000000， 7个0.

拥有5个房，在北京就是亿万富翁了。难不难？ 应该不难， 贪官多的很。

北美的 Billionaire.

A billionaire, in countries that use the short scale number naming system, is a person with a net worth of at least one billion (1,000,000,000, i.e. a thousand million) units of a given currency, usually major currencies such as the United States dollar, the euro or the pound sterling. 

北美的温哥华， 好房的平均价是 1M（ 1，000，000）， 要成为北美的Billionaire， 要有 1000 个 价值1M的房子， 容易吗？

Notably, the Forbes 400 Richest Americans list is published annually since 1982. The combined net worth of the 2017 class of the 400 richest Americans was $2.7 trillion, up from $2.4 trillion in the previous year. As of March 2018, the U.S. had 585 billionaires.

Canada has 7 new billionaires as rich list hits record. ... There are 46 Canadiansamong the Forbes list, including 7 new billionaires added over the past year. Canada'swealthiest have a combined net worth of U$148.5 billion, up $14.7 billion since 2017.Mar 7, 2018

美国有 585 亿万富翁， 我们加拿大只有 46 个。 北美只有大约 600 个亿万富翁。