B is the transaction amount in the financial industry.

The unit of B in digital currency is one billion. Domestic figures are in groups of four, for example, 4, is 1,, and eight digits are 12 trillion (this word is still used in Taiwan Province), while foreign figures are in groups of three, and one is added below: apostrophe. Head-to-head, a thousand, a million and two, a billion before three, and a trillion before four.