990012 divided by 8 
The aim is to understand the frequency of 8 in 990012.

Advancing to step 1:
When dividing 9 by 8, we get 1 with a remainder of 1.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
If we subtract 8 from 9, we get 1.
Bring next digit (9) of the dividend behind the 1 and repeat the process: 19 / 8

Moving on to step 2:
If we divide 19 by 8, we get 2 and a remainder of 3.
Put 2 as the next digit of the answer. 
Result so far: 12.0
Subtracting 16 from 19 leaves us with 3.
Take the next digit (0) from the dividend and append it to 3, then repeat: 30 / 8

Going ahead to step 3:
8 goes into 30 3 times with a remainder of 6.
The next digit of our result is 3. 
Result so far: 123.0
Subtract 24 from 30 to get 6.
Bring next digit (0) of the dividend behind the 6 and repeat the process: 60 / 8

Step 4:
60 divided by 8 is 7 with a remainder of 4.
Put 7 as the next digit of the answer. 
Result so far: 1237.0
If we subtract 56 from 60, we get 4.
Bring next digit (1) of the dividend behind the 4 and repeat the process: 41 / 8

Let's proceed to step 5:
The number 8 fits into 41 5 times, leaving a remainder of 1.
Record the quotient 5 as the next digit in the result. 
Result so far: 12375.0
Subtracting 40 from 41 leaves us with 1.
Bring next digit (2) of the dividend behind the 1 and repeat the process: 12 / 8

On to step 6:
The number 8 fits into 12 1 times, leaving a remainder of 4.
Put 1 as the next digit of the answer. 
Result so far: 123751.0
If we subtract 8 from 12, we get 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Going ahead to step 7:
8 can be fit into 40 5 times, resulting in a remainder of 0.
Record the quotient 5 as the next digit in the result. 
Result so far: 123751.5
The remainder is 0 after subtracting 40 from 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Going ahead to step 8:
8 goes into 0 0 times with a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 123751.5
If we subtract 0 from 0, we get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Step 9:
8 can be fit into 0 0 times, resulting in a remainder of 0.
The next digit of our result is 0. 
Result so far: 123751.5
If we subtract 0 from 0, we get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

The final result is 123751.5 with a remainder of 0.0.