What is 4.3 billion?

Answer 1

In US and in Scientific Community 1 billion = 10000000000 (or 9 zeros),

for any other Country 1 Billion = 1000000000000 (or 12 zeros)

Now for 4.3 billion as per US standards is equal to 4300000000, similarly

for any other location is it 4300000000000