The number form is: 2,400,000
To write 24 million million, you would start by writing the number 24. Then, you would add the word "million" twice to indicate the magnitude of the number. In numerical form, this would be written as 24,000,000,000,000.
2.51 million written in number form is 2,510,000
One million in number form is 1,000,000
80,000,000 is 80 million in number form.
689 million in number form is 689,000,000
3.42 million in number form is 3,420,000
8.4 million in number form is 8,400,000
5.31 million in number form is 5,310,000
2.79 million in number form is 2,790,000
378.8 million in number form is 378,800,000
19.8 million in number form is 19,800,000
You write million in number form by appending six zeroes to the number. So "two million" is 2,000,000 "Five million" is 5,000,000