156
£156 billion
156/200 = 0.78
I write 620 billion as 620 billion.
No. Earth will be scorched and possibly consume by the sun in about 5 billion years.
156 billion people are in the north east54 million
1.56e11 or 1.56 x 1011
156.0
Sixteen point two billion is how I would write it.
You write 3.56 billion as 3,560,000,000.
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."