Using the US system, 2 billion is 2,000,000,000. This divided by 50 is 40 million, 40,000,000.
50
50 billion 100,000,000,000 divided by 2 = 50,000,000,000 It is the same as 100 divided by 2 =50, just remember the correct amount of zeros. OR 5 x 10+10
2000
0.04
1000
0.5
400,000,000
well take one hundred billion then divide by 2 then when don put 50 where 100 was
10
0.18
0.05
5