1,000,000,000,000,000,000.
1,270,000,000,000
300,000,000,000,000
20,200,000,000,000
A trillion is 1,000,000,000,000, so 1.3 trillion is 1,300,000,000,000
To write "billion million," you can express it numerically as 1 billion multiplied by 1 million, which equals 1,000,000,000,000, or 1 trillion. In words, you would say "one trillion." If you meant "billion" and "million" separately, they are written as "billion" for 1,000,000,000 and "million" for 1,000,000.
To write 20.5 million numerically, you would write it as 20,500,000.
1,000,000,000,000
20,500,000
5 300 000 000 000.
1.6 million = 1,600,000
3,300,000
2,200,000