We're dividing 53531287 by 252 
The aim is to understand the frequency of 252 in 53531287.

On to step 1:
5 divided by 252 is 0 with a remainder of 5.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 5 leaves us with 5.
Fetch the next digit (3) from the dividend, attach it to 5 and continue: 53 / 252

On to step 2:
The number 252 fits into 53 0 times, leaving a remainder of 53.
Write down 0 as next digit of the result. 
Result so far: 0.0
The remainder is 53 after subtracting 0 from 53.
Bring next digit (5) of the dividend behind the 53 and repeat the process: 535 / 252

Advancing to step 3:
If we divide 535 by 252, we get 2 and a remainder of 31.
Record the quotient 2 as the next digit in the result. 
Result so far: 2.0
If we subtract 504 from 535, we get 31.
Append the next digit (3) from the dividend to 31 and continue with: 313 / 252

Going ahead to step 4:
If we divide 313 by 252, we get 1 and a remainder of 61.
Write down 1 as next digit of the result. 
Result so far: 21.0
If we subtract 252 from 313, we get 61.
Fetch the next digit (1) from the dividend, attach it to 61 and continue: 611 / 252

Advancing to step 5:
252 can be fit into 611 2 times, resulting in a remainder of 107.
Put 2 as the next digit of the answer. 
Result so far: 212.0
If we subtract 504 from 611, we get 107.
Bring next digit (2) of the dividend behind the 107 and repeat the process: 1072 / 252

Moving on to step 6:
If we divide 1072 by 252, we get 4 and a remainder of 64.
Record the quotient 4 as the next digit in the result. 
Result so far: 2124.0
Deduct 1008 from 1072 and we're left with 64.
Grab the next digit (8) from the dividend, add it to 64, then carry on: 648 / 252

Going ahead to step 7:
648 divided by 252 is 2 with a remainder of 144.
Record the quotient 2 as the next digit in the result. 
Result so far: 21242.0
If we take 504 away from 648, we end up with 144.
Bring next digit (7) of the dividend behind the 144 and repeat the process: 1447 / 252

Let's proceed to step 8:
When dividing 1447 by 252, we get 5 with a remainder of 187.
Use 5 as the next digit of our solution. 
Result so far: 212425.0
If we take 1260 away from 1447, we end up with 187.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1870, and continue the process.

On to step 9:
1870 divided by 252 is 7 with a remainder of 106.
The next digit of our result is 7. 
Result so far: 212425.7
The remainder is 106 after subtracting 1764 from 1870.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1060, and continue the process.

Moving on to step 10:
When dividing 1060 by 252, we get 4 with a remainder of 52.
Record the quotient 4 as the next digit in the result. 
Result so far: 212425.74
Subtracting 1008 from 1060 leaves us with 52.
Since there are no more digits in the dividend, we add a zero to the remainder making it 520, and continue the process.

Let's proceed to step 11:
252 goes into 520 2 times with a remainder of 16.
The next digit of our result is 2. 
Result so far: 212425.742
Deduct 504 from 520 and we're left with 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

Let's proceed to step 12:
252 goes into 160 0 times with a remainder of 160.
The next digit of our result is 0. 
Result so far: 212425.742
Subtracting 0 from 160 leaves us with 160.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1600, and continue the process.

Moving on to step 13:
When dividing 1600 by 252, we get 6 with a remainder of 88.
The next digit of our result is 6. 
Result so far: 212425.74206
Subtracting 1512 from 1600 leaves us with 88.
Since there are no more digits in the dividend, we add a zero to the remainder making it 880, and continue the process.

Let's proceed to step 14:
252 goes into 880 3 times with a remainder of 124.
The number 3 becomes the next digit in our result. 
Result so far: 212425.742063
If we subtract 756 from 880, we get 124.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1240, and continue the process.

Let's proceed to step 15:
If we divide 1240 by 252, we get 4 and a remainder of 232.
Write down 4 as next digit of the result. 
Result so far: 212425.7420634
The remainder is 232 after subtracting 1008 from 1240.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2320, and continue the process.

Moving on to step 16:
2320 divided by 252 is 9 with a remainder of 52.
Use 9 as the next digit of our solution. 
Result so far: 212425.74206349
Subtracting 2268 from 2320 leaves us with 52.
Since there are no more digits in the dividend, we add a zero to the remainder making it 520, and continue the process.

The final result is 212425.74206349 with a remainder of 5.2e-08.