If the question is about WRITING 12 billion, the answer is 12 000 000 000
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36 billion.
380 quadrillion. --------------------------------------- 1 billion = 10 to power 12 (according to SI units) 12 billion = 12 x 10 to power 12 1 year = 86400 x 365 = 31536000 seconds 12 billion = 12 to power 12 x 31536000 = 3.78432 E20 or 378.432 trillion
11.7 billion rounded to the nearest 10 billion would be 12 billion.
12 billion is 12,000 million, in the US and present UK Short Scale. 12 billion is 12,000,000 million, in the former UK Long Scale.
You would right 1.2 billion like this: 1,200,000,000