873091 divided by 8 
The aim is to understand the frequency of 8 in 873091.

Let's proceed to step 1:
8 goes into 8 1 times with a remainder of 0.
Put 1 as the next digit of the answer. 
Result so far: 1.0
Subtracting 8 from 8 leaves us with 0.
Take the next digit (7) from the dividend and append it to 0, then repeat: 7 / 8

On to step 2:
8 can be fit into 7 0 times, resulting in a remainder of 7.
The number 0 becomes the next digit in our result. 
Result so far: 10.0
Deduct 0 from 7 and we're left with 7.
Grab the next digit (3) from the dividend, add it to 7, then carry on: 73 / 8

Going ahead to step 3:
73 divided by 8 is 9 with a remainder of 1.
Record the quotient 9 as the next digit in the result. 
Result so far: 109.0
Subtract 72 from 73 to get 1.
Fetch the next digit (0) from the dividend, attach it to 1 and continue: 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: 1091.0
Deduct 8 from 10 and we're left with 2.
Fetch the next digit (9) from the dividend, attach it to 2 and continue: 29 / 8

Advancing to step 5:
8 can be fit into 29 3 times, resulting in a remainder of 5.
The number 3 becomes the next digit in our result. 
Result so far: 10913.0
If we subtract 24 from 29, we get 5.
Append the next digit (1) from the dividend to 5 and continue with: 51 / 8

Going ahead to step 6:
8 can be fit into 51 6 times, resulting in a remainder of 3.
Put 6 as the next digit of the answer. 
Result so far: 109136.0
Subtracting 48 from 51 leaves us with 3.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

Moving on to step 7:
8 can be fit into 30 3 times, resulting in a remainder of 6.
Record the quotient 3 as the next digit in the result. 
Result so far: 109136.3
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.

Advancing to step 8:
When dividing 60 by 8, we get 7 with a remainder of 4.
Write down 7 as next digit of the result. 
Result so far: 109136.37
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 9:
40 divided by 8 is 5 with a remainder of 0.
Put 5 as the next digit of the answer. 
Result so far: 109136.375
If we take 40 away from 40, we end up 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.

Advancing to step 10:
8 can be fit into 0 0 times, resulting in a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 109136.375
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 11:
The number 8 fits into 0 0 times, leaving a remainder of 0.
Write down 0 as next digit of the result. 
Result so far: 109136.375
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 109136.375, and the remainder is 0.0.