866086 divided by 8 
The aim is to understand the frequency of 8 in 866086.

Moving on to step 1:
If we divide 8 by 8, we get 1 and a remainder of 0.
The next digit of our result is 1. 
Result so far: 1.0
If we take 8 away from 8, we end up with 0.
Grab the next digit (6) from the dividend, add it to 0, then carry on: 6 / 8

Advancing to step 2:
6 divided by 8 is 0 with a remainder of 6.
The number 0 becomes the next digit in our result. 
Result so far: 10.0
Subtracting 0 from 6 leaves us with 6.
Take the next digit (6) from the dividend and append it to 6, then repeat: 66 / 8

On to step 3:
66 divided by 8 is 8 with a remainder of 2.
The next digit of our result is 8. 
Result so far: 108.0
Subtracting 64 from 66 leaves us with 2.
Bring next digit (0) of the dividend behind the 2 and repeat the process: 20 / 8

Step 4:
The number 8 fits into 20 2 times, leaving a remainder of 4.
Use 2 as the next digit of our solution. 
Result so far: 1082.0
Subtract 16 from 20 to get 4.
Take the next digit (8) from the dividend and append it to 4, then repeat: 48 / 8

Moving on to step 5:
If we divide 48 by 8, we get 6 and a remainder of 0.
The next digit of our result is 6. 
Result so far: 10826.0
If we take 48 away from 48, we end up with 0.
Bring next digit (6) of the dividend behind the 0 and repeat the process: 6 / 8

Going ahead to step 6:
8 can be fit into 6 0 times, resulting in a remainder of 6.
Use 0 as the next digit of our solution. 
Result so far: 108260.0
Subtract 0 from 6 to get 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Moving on to step 7:
The number 8 fits into 60 7 times, leaving a remainder of 4.
Write down 7 as next digit of the result. 
Result so far: 108260.7
Subtracting 56 from 60 leaves us with 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Step 8:
When dividing 40 by 8, we get 5 with a remainder of 0.
Write down 5 as next digit of the result. 
Result so far: 108260.75
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.

Moving on to step 9:
8 goes into 0 0 times with a remainder of 0.
The next digit of our result is 0. 
Result so far: 108260.75
Subtracting 0 from 0 leaves us 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 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: 108260.75
Subtracting 0 from 0 leaves us 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.

The quotient of the division is 108260.75, and the remainder is 0.0.