Let's change it by multiplying by 10^6.
So, the number is:
82,840,000 [82 million, 840 thousand]
Now,
For scientific notation, we have to take the decimal point until there is 1 digit to its left.
Thus it will be:
8.284
This number will be multiplied by a power of 10. This power will be the number of digits we went left to have 8.284 instead of 82,840,000...
Well, that's 7 digits. Thus, the scientific notation would be:
[tex]8.284\times10^7^{}[/tex]