We look at the division of 921002 by 8 
The aim is to understand the frequency of 8 in 921002.

On to step 1:
8 goes into 9 1 times with a remainder of 1.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
Deduct 8 from 9 and we're left with 1.
Include the next digit (2) from the dividend after 1, then repeat: 12 / 8

Let's proceed to step 2:
8 can be fit into 12 1 times, resulting in a remainder of 4.
The number 1 becomes the next digit in our result. 
Result so far: 11.0
If we subtract 8 from 12, we get 4.
Grab the next digit (1) from the dividend, add it to 4, then carry on: 41 / 8

Going ahead to step 3:
8 goes into 41 5 times with a remainder of 1.
The next digit of our result is 5. 
Result so far: 115.0
Subtract 40 from 41 to get 1.
Grab the next digit (0) from the dividend, add it to 1, then carry on: 10 / 8

On to step 4:
The number 8 fits into 10 1 times, leaving a remainder of 2.
Put 1 as the next digit of the answer. 
Result so far: 1151.0
Subtracting 8 from 10 leaves us with 2.
Include the next digit (0) from the dividend after 2, then repeat: 20 / 8

Step 5:
20 divided by 8 is 2 with a remainder of 4.
Write down 2 as next digit of the result. 
Result so far: 11512.0
The remainder is 4 after subtracting 16 from 20.
Include the next digit (2) from the dividend after 4, then repeat: 42 / 8

Advancing to step 6:
8 can be fit into 42 5 times, resulting in a remainder of 2.
Write down 5 as next digit of the result. 
Result so far: 115125.0
If we subtract 40 from 42, we get 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

On to step 7:
When dividing 20 by 8, we get 2 with a remainder of 4.
The next digit of our result is 2. 
Result so far: 115125.2
If we subtract 16 from 20, 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.

Moving on to step 8:
If we divide 40 by 8, we get 5 and a remainder of 0.
Use 5 as the next digit of our solution. 
Result so far: 115125.25
Subtract 40 from 40 to 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.

On to step 9:
If we divide 0 by 8, we get 0 and a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 115125.25
The remainder is 0 after subtracting 0 from 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Moving on to step 10:
When dividing 0 by 8, we get 0 with a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 115125.25
Deduct 0 from 0 and we're left with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

After the division, we end up with 115125.25 and a remainder of 0.0.