How to write 128.4 million

To write 128.4 million, you would write it as "128,400,000."

To write 128.4 million, you can write it as "128,400,000". Here's how you can break it down:

1. Start with the whole number part, which is "128".
2. Next, add a comma (,) after every three digits starting from the right. So, after "128", you'll add a comma.
3. After the comma, you have the decimal part, which is ".4".
4. Finally, add the word "million" to indicate the scale of the number.

Therefore, the complete written form of 128.4 million is "128,400,000".

To write 128.4 million, follow these steps:

1. Start with the number 128, which represents the whole number part of 128.4 million.
2. Add a comma after every three digits starting from the right. In this case, after the digit 8. So, the first grouping is 128.
3. Next, write the decimal part of the number, which is .4.
4. Finally, write the word "million" to indicate the magnitude of the number.

Putting it all together, 128.4 million is written as: 128,400,000.