We look at the division of 831909 by 88 
The aim is to understand the frequency of 88 in 831909.

Moving on to step 1:
88 goes into 8 0 times with a remainder of 8.
The next digit of our result is 0. 
Result so far: 0.0
Subtract 0 from 8 to get 8.
Fetch the next digit (3) from the dividend, attach it to 8 and continue: 83 / 88

On to step 2:
If we divide 83 by 88, we get 0 and a remainder of 83.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 83 leaves us with 83.
Append the next digit (1) from the dividend to 83 and continue with: 831 / 88

Step 3:
When dividing 831 by 88, we get 9 with a remainder of 39.
Use 9 as the next digit of our solution. 
Result so far: 9.0
Subtract 792 from 831 to get 39.
Fetch the next digit (9) from the dividend, attach it to 39 and continue: 399 / 88

Going ahead to step 4:
399 divided by 88 is 4 with a remainder of 47.
The number 4 becomes the next digit in our result. 
Result so far: 94.0
Subtract 352 from 399 to get 47.
Include the next digit (0) from the dividend after 47, then repeat: 470 / 88

Let's proceed to step 5:
The number 88 fits into 470 5 times, leaving a remainder of 30.
Record the quotient 5 as the next digit in the result. 
Result so far: 945.0
The remainder is 30 after subtracting 440 from 470.
Fetch the next digit (9) from the dividend, attach it to 30 and continue: 309 / 88

Advancing to step 6:
309 divided by 88 is 3 with a remainder of 45.
Put 3 as the next digit of the answer. 
Result so far: 9453.0
If we subtract 264 from 309, we get 45.
Since there are no more digits in the dividend, we add a zero to the remainder making it 450, and continue the process.

Let's proceed to step 7:
450 divided by 88 is 5 with a remainder of 10.
Use 5 as the next digit of our solution. 
Result so far: 9453.5
The remainder is 10 after subtracting 440 from 450.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Step 8:
When dividing 100 by 88, we get 1 with a remainder of 12.
Put 1 as the next digit of the answer. 
Result so far: 9453.51
Subtract 88 from 100 to get 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

Step 9:
88 can be fit into 120 1 times, resulting in a remainder of 32.
The number 1 becomes the next digit in our result. 
Result so far: 9453.511
Deduct 88 from 120 and we're left with 32.
Since there are no more digits in the dividend, we add a zero to the remainder making it 320, and continue the process.

The final result is 9453.511 with a remainder of 0.0032.