We look at the division of 400691 by 88 
The aim is to understand the frequency of 88 in 400691.

On to step 1:
When dividing 4 by 88, we get 0 with a remainder of 4.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 4, we get 4.
Bring next digit (0) of the dividend behind the 4 and repeat the process: 40 / 88

Moving on to step 2:
40 divided by 88 is 0 with a remainder of 40.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 40, we end up with 40.
Append the next digit (0) from the dividend to 40 and continue with: 400 / 88

Going ahead to step 3:
The number 88 fits into 400 4 times, leaving a remainder of 48.
Put 4 as the next digit of the answer. 
Result so far: 4.0
Deduct 352 from 400 and we're left with 48.
Take the next digit (6) from the dividend and append it to 48, then repeat: 486 / 88

On to step 4:
If we divide 486 by 88, we get 5 and a remainder of 46.
Record the quotient 5 as the next digit in the result. 
Result so far: 45.0
If we take 440 away from 486, we end up with 46.
Grab the next digit (9) from the dividend, add it to 46, then carry on: 469 / 88

Advancing to step 5:
88 goes into 469 5 times with a remainder of 29.
Put 5 as the next digit of the answer. 
Result so far: 455.0
Subtract 440 from 469 to get 29.
Include the next digit (1) from the dividend after 29, then repeat: 291 / 88

Moving on to step 6:
When dividing 291 by 88, we get 3 with a remainder of 27.
Write down 3 as next digit of the result. 
Result so far: 4553.0
If we subtract 264 from 291, we get 27.
Since there are no more digits in the dividend, we add a zero to the remainder making it 270, and continue the process.

Let's proceed to step 7:
When dividing 270 by 88, we get 3 with a remainder of 6.
Write down 3 as next digit of the result. 
Result so far: 4553.3
If we take 264 away from 270, 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:
88 goes into 60 0 times with a remainder of 60.
The number 0 becomes the next digit in our result. 
Result so far: 4553.3
Subtracting 0 from 60 leaves us with 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

Let's proceed to step 9:
88 goes into 600 6 times with a remainder of 72.
The next digit of our result is 6. 
Result so far: 4553.306
If we subtract 528 from 600, we get 72.
Since there are no more digits in the dividend, we add a zero to the remainder making it 720, and continue the process.

On to step 10:
If we divide 720 by 88, we get 8 and a remainder of 16.
Use 8 as the next digit of our solution. 
Result so far: 4553.3068
Deduct 704 from 720 and we're left with 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

Advancing to step 11:
When dividing 160 by 88, we get 1 with a remainder of 72.
The next digit of our result is 1. 
Result so far: 4553.30681
Subtract 88 from 160 to get 72.
Since there are no more digits in the dividend, we add a zero to the remainder making it 720, and continue the process.

Going ahead to step 12:
88 can be fit into 720 8 times, resulting in a remainder of 16.
The number 8 becomes the next digit in our result. 
Result so far: 4553.306818
The remainder is 16 after subtracting 704 from 720.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

Step 13:
160 divided by 88 is 1 with a remainder of 72.
Write down 1 as next digit of the result. 
Result so far: 4553.3068181
The remainder is 72 after subtracting 88 from 160.
Since there are no more digits in the dividend, we add a zero to the remainder making it 720, and continue the process.

Let's proceed to step 14:
The number 88 fits into 720 8 times, leaving a remainder of 16.
Record the quotient 8 as the next digit in the result. 
Result so far: 4553.30681818
Deduct 704 from 720 and we're left with 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

Our division results in 4553.30681818 with a remaining 1.6e-08.