How do you convert US 142.98 US million into US billion?

it takes a thousand million to make a billion, so

1,000,000 = 1 million

1,000,000,000 = 1 billion

divide 142.98 by 1000= .14298

usually only convert if you have a thousand or more millions.

for instance, the US population is 300 million, or .3 billion. but nobody says that. India as 1200 million people, but people usually say 1.2 billion, because a trillion is to billions as a billion is to millions. I assume you have a math test or something.