25000000000/8000 = 3125000
320
12.5
25
0.3125
22.7273
0.0001
0
28
0.28
5
25
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.