I write 620 billion as 620 billion.
Sixteen point two billion is how I would write it.
You write 3.56 billion as 3,560,000,000.
2457
You can write 40.3 billion as 40,300,000,000.
2985 + 2457 = 5442
2457 x 8 = 19656
I write 620 billion as 620 billion.
Sixteen point two billion is how I would write it.
Negative 2457
You write 3.56 billion as 3,560,000,000.
2457
1,3,7,9,13,21,27,39,63,91,117,189,273,351,819,2457
2457
You can write 40.3 billion as 40,300,000,000.
You can write out 1.8 billion as "1,800,000,000" or "one billion eight hundred million."
Since you asked how I would write the number, the answer is 1031.