We look at the division of 201517 by 52 
The aim is to understand the frequency of 52 in 201517.

On to step 1:
52 can be fit into 2 0 times, resulting in a remainder of 2.
The next digit of our result is 0. 
Result so far: 0.0
Subtract 0 from 2 to get 2.
Fetch the next digit (0) from the dividend, attach it to 2 and continue: 20 / 52

Moving on to step 2:
20 divided by 52 is 0 with a remainder of 20.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 20, we end up with 20.
Take the next digit (1) from the dividend and append it to 20, then repeat: 201 / 52

Advancing to step 3:
If we divide 201 by 52, we get 3 and a remainder of 45.
Use 3 as the next digit of our solution. 
Result so far: 3.0
Subtract 156 from 201 to get 45.
Fetch the next digit (5) from the dividend, attach it to 45 and continue: 455 / 52

Step 4:
455 divided by 52 is 8 with a remainder of 39.
The next digit of our result is 8. 
Result so far: 38.0
Subtract 416 from 455 to get 39.
Grab the next digit (1) from the dividend, add it to 39, then carry on: 391 / 52

Let's proceed to step 5:
52 goes into 391 7 times with a remainder of 27.
Write down 7 as next digit of the result. 
Result so far: 387.0
If we take 364 away from 391, we end up with 27.
Include the next digit (7) from the dividend after 27, then repeat: 277 / 52

Going ahead to step 6:
The number 52 fits into 277 5 times, leaving a remainder of 17.
Record the quotient 5 as the next digit in the result. 
Result so far: 3875.0
If we subtract 260 from 277, we get 17.
Since there are no more digits in the dividend, we add a zero to the remainder making it 170, and continue the process.

Going ahead to step 7:
52 can be fit into 170 3 times, resulting in a remainder of 14.
The next digit of our result is 3. 
Result so far: 3875.3
The remainder is 14 after subtracting 156 from 170.
Since there are no more digits in the dividend, we add a zero to the remainder making it 140, and continue the process.

Moving on to step 8:
52 can be fit into 140 2 times, resulting in a remainder of 36.
Record the quotient 2 as the next digit in the result. 
Result so far: 3875.32
If we subtract 104 from 140, 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 9:
The number 52 fits into 360 6 times, leaving a remainder of 48.
Record the quotient 6 as the next digit in the result. 
Result so far: 3875.326
The remainder is 48 after subtracting 312 from 360.
Since there are no more digits in the dividend, we add a zero to the remainder making it 480, and continue the process.

On to step 10:
If we divide 480 by 52, we get 9 and a remainder of 12.
Record the quotient 9 as the next digit in the result. 
Result so far: 3875.3269
If we subtract 468 from 480, we 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.

Moving on to step 11:
The number 52 fits into 120 2 times, leaving a remainder of 16.
The number 2 becomes the next digit in our result. 
Result so far: 3875.32692
The remainder is 16 after subtracting 104 from 120.
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 12:
160 divided by 52 is 3 with a remainder of 4.
Record the quotient 3 as the next digit in the result. 
Result so far: 3875.326923
Subtract 156 from 160 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 13:
The number 52 fits into 40 0 times, leaving a remainder of 40.
Record the quotient 0 as the next digit in the result. 
Result so far: 3875.326923
Deduct 0 from 40 and we're left with 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Step 14:
52 can be fit into 400 7 times, resulting in a remainder of 36.
The number 7 becomes the next digit in our result. 
Result so far: 3875.32692307
If we take 364 away from 400, we end up with 36.
Since there are no more digits in the dividend, we add a zero to the remainder making it 360, and continue the process.

The final result is 3875.32692307 with a remainder of 3.6e-08.