7,800,000,000 / 1,830,000
Cancel down by '10,000'
Hence
780,000 / 183 =
Cancel down by '3'
260000 / 61
'61' is Prime number, so the answer will produce an irrational decimal
Hence 4262.295082....
0.26
15.6
6,078,000,000
0.0333
It is: 39/85 percent or about 0.5%
0.0017
3.25
0.42
78
156
0.3205
0.0423