We look at the division of 135596 by 27 
The aim is to understand the frequency of 27 in 135596.

Going ahead to step 1:
The number 27 fits into 1 0 times, leaving a remainder of 1.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 1, we get 1.
Grab the next digit (3) from the dividend, add it to 1, then carry on: 13 / 27

Let's proceed to step 2:
When dividing 13 by 27, we get 0 with a remainder of 13.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 13 leaves us with 13.
Append the next digit (5) from the dividend to 13 and continue with: 135 / 27

Moving on to step 3:
If we divide 135 by 27, we get 5 and a remainder of 0.
The number 5 becomes the next digit in our result. 
Result so far: 5.0
If we subtract 135 from 135, we get 0.
Include the next digit (5) from the dividend after 0, then repeat: 5 / 27

Advancing to step 4:
27 can be fit into 5 0 times, resulting in a remainder of 5.
Put 0 as the next digit of the answer. 
Result so far: 50.0
If we take 0 away from 5, we end up with 5.
Include the next digit (9) from the dividend after 5, then repeat: 59 / 27

Moving on to step 5:
The number 27 fits into 59 2 times, leaving a remainder of 5.
Put 2 as the next digit of the answer. 
Result so far: 502.0
If we subtract 54 from 59, we get 5.
Bring next digit (6) of the dividend behind the 5 and repeat the process: 56 / 27

Step 6:
27 goes into 56 2 times with a remainder of 2.
Use 2 as the next digit of our solution. 
Result so far: 5022.0
If we subtract 54 from 56, we get 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Going ahead to step 7:
If we divide 20 by 27, we get 0 and a remainder of 20.
The next digit of our result is 0. 
Result so far: 5022.0
Deduct 0 from 20 and we're left with 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Moving on to step 8:
27 can be fit into 200 7 times, resulting in a remainder of 11.
Put 7 as the next digit of the answer. 
Result so far: 5022.07
Deduct 189 from 200 and we're left with 11.
Since there are no more digits in the dividend, we add a zero to the remainder making it 110, and continue the process.

On to step 9:
The number 27 fits into 110 4 times, leaving a remainder of 2.
Put 4 as the next digit of the answer. 
Result so far: 5022.074
Subtract 108 from 110 to get 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

On to step 10:
27 goes into 20 0 times with a remainder of 20.
Write down 0 as next digit of the result. 
Result so far: 5022.074
Subtract 0 from 20 to get 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Moving on to step 11:
If we divide 200 by 27, we get 7 and a remainder of 11.
Record the quotient 7 as the next digit in the result. 
Result so far: 5022.07407
If we take 189 away from 200, we end up with 11.
Since there are no more digits in the dividend, we add a zero to the remainder making it 110, and continue the process.

Let's proceed to step 12:
The number 27 fits into 110 4 times, leaving a remainder of 2.
The number 4 becomes the next digit in our result. 
Result so far: 5022.074074
Subtracting 108 from 110 leaves us with 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Advancing to step 13:
When dividing 20 by 27, we get 0 with a remainder of 20.
The number 0 becomes the next digit in our result. 
Result so far: 5022.074074
The remainder is 20 after subtracting 0 from 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Advancing to step 14:
When dividing 200 by 27, we get 7 with a remainder of 11.
The number 7 becomes the next digit in our result. 
Result so far: 5022.07407407
Subtract 189 from 200 to get 11.
Since there are no more digits in the dividend, we add a zero to the remainder making it 110, and continue the process.

The final outcome is 5022.07407407, with a leftover of 1.1e-08.