We look at the division of 19567239 by 525 
The aim is to understand the frequency of 525 in 19567239.

Advancing to step 1:
When dividing 1 by 525, we get 0 with a remainder of 1.
Use 0 as the next digit of our solution. 
Result so far: 0.0
The remainder is 1 after subtracting 0 from 1.
Grab the next digit (9) from the dividend, add it to 1, then carry on: 19 / 525

On to step 2:
If we divide 19 by 525, we get 0 and a remainder of 19.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 19 leaves us with 19.
Grab the next digit (5) from the dividend, add it to 19, then carry on: 195 / 525

Let's proceed to step 3:
The number 525 fits into 195 0 times, leaving a remainder of 195.
Use 0 as the next digit of our solution. 
Result so far: 0.0
The remainder is 195 after subtracting 0 from 195.
Include the next digit (6) from the dividend after 195, then repeat: 1956 / 525

Step 4:
525 can be fit into 1956 3 times, resulting in a remainder of 381.
The number 3 becomes the next digit in our result. 
Result so far: 3.0
If we take 1575 away from 1956, we end up with 381.
Append the next digit (7) from the dividend to 381 and continue with: 3817 / 525

Going ahead to step 5:
If we divide 3817 by 525, we get 7 and a remainder of 142.
Put 7 as the next digit of the answer. 
Result so far: 37.0
If we subtract 3675 from 3817, we get 142.
Take the next digit (2) from the dividend and append it to 142, then repeat: 1422 / 525

Going ahead to step 6:
525 goes into 1422 2 times with a remainder of 372.
Use 2 as the next digit of our solution. 
Result so far: 372.0
Deduct 1050 from 1422 and we're left with 372.
Include the next digit (3) from the dividend after 372, then repeat: 3723 / 525

Moving on to step 7:
The number 525 fits into 3723 7 times, leaving a remainder of 48.
Write down 7 as next digit of the result. 
Result so far: 3727.0
If we take 3675 away from 3723, we end up with 48.
Grab the next digit (9) from the dividend, add it to 48, then carry on: 489 / 525

Let's proceed to step 8:
When dividing 489 by 525, we get 0 with a remainder of 489.
Write down 0 as next digit of the result. 
Result so far: 37270.0
The remainder is 489 after subtracting 0 from 489.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4890, and continue the process.

On to step 9:
4890 divided by 525 is 9 with a remainder of 165.
The number 9 becomes the next digit in our result. 
Result so far: 37270.9
Deduct 4725 from 4890 and we're left with 165.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1650, and continue the process.

Going ahead to step 10:
525 goes into 1650 3 times with a remainder of 75.
The next digit of our result is 3. 
Result so far: 37270.93
Subtract 1575 from 1650 to get 75.
Since there are no more digits in the dividend, we add a zero to the remainder making it 750, and continue the process.

On to step 11:
750 divided by 525 is 1 with a remainder of 225.
Put 1 as the next digit of the answer. 
Result so far: 37270.931
The remainder is 225 after subtracting 525 from 750.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2250, and continue the process.

Step 12:
The number 525 fits into 2250 4 times, leaving a remainder of 150.
The number 4 becomes the next digit in our result. 
Result so far: 37270.9314
If we subtract 2100 from 2250, we get 150.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1500, and continue the process.

On to step 13:
525 goes into 1500 2 times with a remainder of 450.
Write down 2 as next digit of the result. 
Result so far: 37270.93142
Subtract 1050 from 1500 to get 450.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4500, and continue the process.

Going ahead to step 14:
4500 divided by 525 is 8 with a remainder of 300.
Use 8 as the next digit of our solution. 
Result so far: 37270.931428
If we take 4200 away from 4500, we end up with 300.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3000, and continue the process.

Advancing to step 15:
3000 divided by 525 is 5 with a remainder of 375.
The next digit of our result is 5. 
Result so far: 37270.9314285
If we take 2625 away from 3000, we end up with 375.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3750, and continue the process.

Moving on to step 16:
When dividing 3750 by 525, we get 7 with a remainder of 75.
Record the quotient 7 as the next digit in the result. 
Result so far: 37270.93142857
If we subtract 3675 from 3750, we get 75.
Since there are no more digits in the dividend, we add a zero to the remainder making it 750, and continue the process.

The final result is 37270.93142857 with a remainder of 7.5e-08.