a. 1.85 billion is 1.85 * 1000 * 1,000,000 (1.85 * 10 ^3 * 10 ^6)
...that is 1.85 * 1,000,000,000 (1.85 * 10 ^9)
or 1850,000,000 (185 * 10 ^7)
b. 600,000 (6 * ^5)
c. now the sum becomes:-
1850,000,000 / 600,000 (185 * 10 ^7 / 6 * 10 ^5)
that is by elimination:-
18500 / 6 (185 * 10 ^2 /6)
or
3083.33 recurring QED
0.0425
60 thousand.
185% of 600= 185% * 600= 1.85 * 600= 1,110
0.6
0.1
600
15
1003060020500
600,000,000,000. That's 0.6 billion in the old UK standard, but the US and now the internationally recognised notation would make this 600 billion or 0.6 trillion.
0.0025
9.2308
3 600 030 000