We divide 621989 by 8
The aim is to understand the frequency of 8 in 621989.

Going ahead to step 1:
6 divided by 8 is 0 with a remainder of 6.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we take 0 away from 6, we end up with 6.
Take the next digit (2) from the dividend and append it to 6, then repeat: 62 / 8

Step 2:
62 divided by 8 is 7 with a remainder of 6.
The next digit of our result is 7. 
Result so far: 7.0
Subtracting 56 from 62 leaves us with 6.
Include the next digit (1) from the dividend after 6, then repeat: 61 / 8

Moving on to step 3:
If we divide 61 by 8, we get 7 and a remainder of 5.
Record the quotient 7 as the next digit in the result. 
Result so far: 77.0
The remainder is 5 after subtracting 56 from 61.
Append the next digit (9) from the dividend to 5 and continue with: 59 / 8

Advancing to step 4:
When dividing 59 by 8, we get 7 with a remainder of 3.
The next digit of our result is 7. 
Result so far: 777.0
The remainder is 3 after subtracting 56 from 59.
Take the next digit (8) from the dividend and append it to 3, then repeat: 38 / 8

Going ahead to step 5:
38 divided by 8 is 4 with a remainder of 6.
Put 4 as the next digit of the answer. 
Result so far: 7774.0
If we take 32 away from 38, we end up with 6.
Append the next digit (9) from the dividend to 6 and continue with: 69 / 8

Moving on to step 6:
When dividing 69 by 8, we get 8 with a remainder of 5.
The number 8 becomes the next digit in our result. 
Result so far: 77748.0
Deduct 64 from 69 and we're left with 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Going ahead to step 7:
8 goes into 50 6 times with a remainder of 2.
The number 6 becomes the next digit in our result. 
Result so far: 77748.6
If we take 48 away from 50, we end up with 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Step 8:
If we divide 20 by 8, we get 2 and a remainder of 4.
Record the quotient 2 as the next digit in the result. 
Result so far: 77748.62
Subtract 16 from 20 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 9:
8 can be fit into 40 5 times, resulting in a remainder of 0.
Put 5 as the next digit of the answer. 
Result so far: 77748.625
If we subtract 40 from 40, 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.

Advancing to step 10:
If we divide 0 by 8, we get 0 and a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 77748.625
Subtract 0 from 0 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.

Going ahead to step 11:
When dividing 0 by 8, we get 0 with a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 77748.625
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 final outcome is 77748.625, with a leftover of 0.0.