We're dividing 21495792 by 252 
The aim is to understand the frequency of 252 in 21495792.

Going ahead to step 1:
252 can be fit into 2 0 times, resulting in a remainder of 2.
Use 0 as the next digit of our solution. 
Result so far: 0.0
The remainder is 2 after subtracting 0 from 2.
Include the next digit (1) from the dividend after 2, then repeat: 21 / 252

Going ahead to step 2:
252 can be fit into 21 0 times, resulting in a remainder of 21.
The next digit of our result is 0. 
Result so far: 0.0
Subtracting 0 from 21 leaves us with 21.
Grab the next digit (4) from the dividend, add it to 21, then carry on: 214 / 252

Moving on to step 3:
252 can be fit into 214 0 times, resulting in a remainder of 214.
Use 0 as the next digit of our solution. 
Result so far: 0.0
The remainder is 214 after subtracting 0 from 214.
Grab the next digit (9) from the dividend, add it to 214, then carry on: 2149 / 252

Going ahead to step 4:
252 goes into 2149 8 times with a remainder of 133.
The next digit of our result is 8. 
Result so far: 8.0
Subtract 2016 from 2149 to get 133.
Include the next digit (5) from the dividend after 133, then repeat: 1335 / 252

Let's proceed to step 5:
252 can be fit into 1335 5 times, resulting in a remainder of 75.
Write down 5 as next digit of the result. 
Result so far: 85.0
If we take 1260 away from 1335, we end up with 75.
Include the next digit (7) from the dividend after 75, then repeat: 757 / 252

On to step 6:
252 can be fit into 757 3 times, resulting in a remainder of 1.
Use 3 as the next digit of our solution. 
Result so far: 853.0
If we take 756 away from 757, we end up with 1.
Take the next digit (9) from the dividend and append it to 1, then repeat: 19 / 252

Advancing to step 7:
When dividing 19 by 252, we get 0 with a remainder of 19.
Record the quotient 0 as the next digit in the result. 
Result so far: 8530.0
If we subtract 0 from 19, we get 19.
Grab the next digit (2) from the dividend, add it to 19, then carry on: 192 / 252

Moving on to step 8:
The number 252 fits into 192 0 times, leaving a remainder of 192.
The next digit of our result is 0. 
Result so far: 85300.0
Subtract 0 from 192 to get 192.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1920, and continue the process.

Going ahead to step 9:
1920 divided by 252 is 7 with a remainder of 156.
Use 7 as the next digit of our solution. 
Result so far: 85300.7
Deduct 1764 from 1920 and we're left with 156.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1560, and continue the process.

On to step 10:
When dividing 1560 by 252, we get 6 with a remainder of 48.
The next digit of our result is 6. 
Result so far: 85300.76
Deduct 1512 from 1560 and we're left with 48.
Since there are no more digits in the dividend, we add a zero to the remainder making it 480, and continue the process.

Step 11:
When dividing 480 by 252, we get 1 with a remainder of 228.
Use 1 as the next digit of our solution. 
Result so far: 85300.761
The remainder is 228 after subtracting 252 from 480.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2280, and continue the process.

Going ahead to step 12:
When dividing 2280 by 252, we get 9 with a remainder of 12.
Write down 9 as next digit of the result. 
Result so far: 85300.7619
The remainder is 12 after subtracting 2268 from 2280.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

On to step 13:
If we divide 120 by 252, we get 0 and a remainder of 120.
Record the quotient 0 as the next digit in the result. 
Result so far: 85300.7619
If we subtract 0 from 120, we get 120.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1200, and continue the process.

On to step 14:
252 goes into 1200 4 times with a remainder of 192.
The number 4 becomes the next digit in our result. 
Result so far: 85300.761904
Subtracting 1008 from 1200 leaves us with 192.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1920, and continue the process.

Advancing to step 15:
252 can be fit into 1920 7 times, resulting in a remainder of 156.
Put 7 as the next digit of the answer. 
Result so far: 85300.7619047
If we take 1764 away from 1920, we end up with 156.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1560, and continue the process.

Step 16:
252 goes into 1560 6 times with a remainder of 48.
The number 6 becomes the next digit in our result. 
Result so far: 85300.76190476
Deduct 1512 from 1560 and we're left with 48.
Since there are no more digits in the dividend, we add a zero to the remainder making it 480, and continue the process.

In conclusion, the division gives 85300.76190476 with a balance of 4.8e-08.