In the computer,1m =1024k =1048576b.

In physics, 1 trillion = 10 6, which means 1 million.

There are also three methods in mathematics: upper method, middle method and lower method.

Going to France is the 100 million you said.

China and France are one trillion.

The next law is one billion.

So in order to avoid misunderstanding, many people directly use10 n to express it.