Mega is a unit of quantity, not a monetary unit. In the context of modern Chinese, there are two different interpretations of "trillion", one is millions, that is, 10 6, and the other is trillions, that is, 10 12.

At present, in the prefix system stipulated by People's Republic of China (PRC) (including Hong Kong Special Administrative Region and Macao Special Administrative Region), Mega refers to 10 6, 1 000,000, which is equivalent to the English prefix mega;

In the prefix system stipulated by Taiwan Province Province and Japan, the mega index is 10 12, 1 0,000,000,000,000. Equivalent to the English prefix Tera.

But in terms of living habits, we can see these two usage rules. In practical use, in order to facilitate the distinction, it can be said that 10 6 is a million, and 10 12 is a trillion. Some folks also use giants to represent millions (10 6) and trillions (10 12).

The usage of 1 trillion = 10 12 has been recorded in ancient China literature, and the order from small to large is one, ten, hundred, thousand, ten thousand, one hundred million, trillion, Beijing, Hong, Hong, Gou, Jian and Zheng. Below the decimal point is "ten abdication", and the names are minute, centimeter, milli, silk, sudden, micro, fiber, sand, dust, Egypt, misty, mo, fuzzy, wandering, instant, snap, instant, Liu De, empty and quiet. In the twelfth lesson of the Esperanto textbook published by China News Agency, "How much is one trillion", it is clearly pointed out that one trillion is milion-oble miliono=biliono (one million, that is, 10 to the second power). To calculate this trillion, if we calculate 200 per minute, it is 12000 per hour, 288000 per day, and it is105120000 per year (105120000). It will take more than 9500 years to count one trillion yuan. How many generations will it take to count this trillion? It is more than 769 times of China's population of 65.438+300 million. However, we often encounter "omens" in our daily work. For example, there is an instrument frequency of megahertz, an instrument resistance of megaohms, a radio pressure of megapascals, and so on. However, the "trillion" referred to by modern science and technology is by no means "trillion", but "million", that is, 106. ) is one in a trillion, in other words, the difference between the two "trillions" is one million times. If you calculate according to the above method, you can calculate the last trillion in about three and a half days!