0.0438
62500000000
4
(9 divided by 16) minus (9 divided by 20) = 0.1125
1,000,000,000 divided by 20,000,000= 50
One half billion divided by 16 is 31,250.
2.88
10
0.0438
0.0938
1
0.032
31,250
0.2857
400,000,000
2.8571
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.