We look at the division of 12438 by 88 
The aim is to understand the frequency of 88 in 12438.

Advancing to step 1:
1 divided by 88 is 0 with a remainder of 1.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 1 and we're left with 1.
Append the next digit (2) from the dividend to 1 and continue with: 12 / 88

Step 2:
When dividing 12 by 88, we get 0 with a remainder of 12.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtracting 0 from 12 leaves us with 12.
Append the next digit (4) from the dividend to 12 and continue with: 124 / 88

Step 3:
The number 88 fits into 124 1 times, leaving a remainder of 36.
Put 1 as the next digit of the answer. 
Result so far: 1.0
If we take 88 away from 124, we end up with 36.
Grab the next digit (3) from the dividend, add it to 36, then carry on: 363 / 88

Let's proceed to step 4:
If we divide 363 by 88, we get 4 and a remainder of 11.
Write down 4 as next digit of the result. 
Result so far: 14.0
The remainder is 11 after subtracting 352 from 363.
Fetch the next digit (8) from the dividend, attach it to 11 and continue: 118 / 88

Let's proceed to step 5:
88 can be fit into 118 1 times, resulting in a remainder of 30.
The next digit of our result is 1. 
Result so far: 141.0
If we take 88 away from 118, we end up with 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

Let's proceed to step 6:
If we divide 300 by 88, we get 3 and a remainder of 36.
Put 3 as the next digit of the answer. 
Result so far: 141.3
If we subtract 264 from 300, we get 36.
Since there are no more digits in the dividend, we add a zero to the remainder making it 360, and continue the process.

On to step 7:
The number 88 fits into 360 4 times, leaving a remainder of 8.
Use 4 as the next digit of our solution. 
Result so far: 141.34
Deduct 352 from 360 and we're left with 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Step 8:
88 goes into 80 0 times with a remainder of 80.
Write down 0 as next digit of the result. 
Result so far: 141.34
Subtract 0 from 80 to get 80.
Since there are no more digits in the dividend, we add a zero to the remainder making it 800, and continue the process.

Advancing to step 9:
When dividing 800 by 88, we get 9 with a remainder of 8.
Put 9 as the next digit of the answer. 
Result so far: 141.3409
Deduct 792 from 800 and we're left with 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Advancing to step 10:
If we divide 80 by 88, we get 0 and a remainder of 80.
The number 0 becomes the next digit in our result. 
Result so far: 141.3409
Deduct 0 from 80 and we're left with 80.
Since there are no more digits in the dividend, we add a zero to the remainder making it 800, and continue the process.

Going ahead to step 11:
800 divided by 88 is 9 with a remainder of 8.
The number 9 becomes the next digit in our result. 
Result so far: 141.340909
The remainder is 8 after subtracting 792 from 800.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Let's proceed to step 12:
If we divide 80 by 88, we get 0 and a remainder of 80.
The number 0 becomes the next digit in our result. 
Result so far: 141.340909
If we subtract 0 from 80, we get 80.
Since there are no more digits in the dividend, we add a zero to the remainder making it 800, and continue the process.

Step 13:
88 goes into 800 9 times with a remainder of 8.
Write down 9 as next digit of the result. 
Result so far: 141.34090909
Subtracting 792 from 800 leaves us with 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

The quotient of the division is 141.34090909, and the remainder is 8e-09.