We look at the division of 806990 by 8 
The aim is to understand the frequency of 8 in 806990.

Advancing to step 1:
If we divide 8 by 8, we get 1 and a remainder of 0.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
If we subtract 8 from 8, we get 0.
Grab the next digit (0) from the dividend, add it to 0, then carry on: 0 / 8

Advancing to step 2:
8 goes into 0 0 times with a remainder of 0.
Write down 0 as next digit of the result. 
Result so far: 10.0
Subtracting 0 from 0 leaves us with 0.
Include the next digit (6) from the dividend after 0, then repeat: 6 / 8

Advancing to step 3:
8 can be fit into 6 0 times, resulting in a remainder of 6.
Write down 0 as next digit of the result. 
Result so far: 100.0
If we take 0 away from 6, we end up with 6.
Bring next digit (9) of the dividend behind the 6 and repeat the process: 69 / 8

Going ahead to step 4:
8 can be fit into 69 8 times, resulting in a remainder of 5.
Use 8 as the next digit of our solution. 
Result so far: 1008.0
If we take 64 away from 69, we end up with 5.
Bring next digit (9) of the dividend behind the 5 and repeat the process: 59 / 8

Let's proceed to step 5:
If we divide 59 by 8, we get 7 and a remainder of 3.
Put 7 as the next digit of the answer. 
Result so far: 10087.0
Subtract 56 from 59 to get 3.
Bring next digit (0) of the dividend behind the 3 and repeat the process: 30 / 8

Let's proceed to step 6:
8 can be fit into 30 3 times, resulting in a remainder of 6.
The number 3 becomes the next digit in our result. 
Result so far: 100873.0
If we take 24 away from 30, we end up with 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Going ahead to step 7:
The number 8 fits into 60 7 times, leaving a remainder of 4.
The number 7 becomes the next digit in our result. 
Result so far: 100873.7
Subtract 56 from 60 to 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.

On to step 8:
40 divided by 8 is 5 with a remainder of 0.
Write down 5 as next digit of the result. 
Result so far: 100873.75
Deduct 40 from 40 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.

On to step 9:
When dividing 0 by 8, we get 0 with a remainder of 0.
The next digit of our result is 0. 
Result so far: 100873.75
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.

Step 10:
If we divide 0 by 8, we get 0 and a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 100873.75
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.

The quotient of the division is 100873.75, and the remainder is 0.0.