625
0.0008
It is 10,000.
100,000
100
One half billion divided by 16 is 31,250.
0.0438
1000000000 / 10000 = 100,000
0.0938
0.032
31,250
Well, 4 divided by 16 is 1/4, so 16 into 400 billion it must be 100 billion times that. That makes it 25 billion. Or if you like, 400 divided by 16 is 25, leading to the same answer.