We look at the division of 508231 by 53 
The aim is to understand the frequency of 53 in 508231.

Let's proceed to step 1:
53 goes into 5 0 times with a remainder of 5.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 5, we end up with 5.
Bring next digit (0) of the dividend behind the 5 and repeat the process: 50 / 53

Going ahead to step 2:
If we divide 50 by 53, we get 0 and a remainder of 50.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 50, we end up with 50.
Bring next digit (8) of the dividend behind the 50 and repeat the process: 508 / 53

Step 3:
53 goes into 508 9 times with a remainder of 31.
Write down 9 as next digit of the result. 
Result so far: 9.0
If we take 477 away from 508, we end up with 31.
Fetch the next digit (2) from the dividend, attach it to 31 and continue: 312 / 53

Advancing to step 4:
53 can be fit into 312 5 times, resulting in a remainder of 47.
The number 5 becomes the next digit in our result. 
Result so far: 95.0
Deduct 265 from 312 and we're left with 47.
Append the next digit (3) from the dividend to 47 and continue with: 473 / 53

Step 5:
If we divide 473 by 53, we get 8 and a remainder of 49.
Put 8 as the next digit of the answer. 
Result so far: 958.0
The remainder is 49 after subtracting 424 from 473.
Grab the next digit (1) from the dividend, add it to 49, then carry on: 491 / 53

Step 6:
The number 53 fits into 491 9 times, leaving a remainder of 14.
Use 9 as the next digit of our solution. 
Result so far: 9589.0
The remainder is 14 after subtracting 477 from 491.
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 7:
140 divided by 53 is 2 with a remainder of 34.
Put 2 as the next digit of the answer. 
Result so far: 9589.2
Deduct 106 from 140 and we're left with 34.
Since there are no more digits in the dividend, we add a zero to the remainder making it 340, and continue the process.

Step 8:
If we divide 340 by 53, we get 6 and a remainder of 22.
Put 6 as the next digit of the answer. 
Result so far: 9589.26
If we subtract 318 from 340, we get 22.
Since there are no more digits in the dividend, we add a zero to the remainder making it 220, and continue the process.

Advancing to step 9:
53 can be fit into 220 4 times, resulting in a remainder of 8.
Record the quotient 4 as the next digit in the result. 
Result so far: 9589.264
Subtracting 212 from 220 leaves us with 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Going ahead to step 10:
53 can be fit into 80 1 times, resulting in a remainder of 27.
Put 1 as the next digit of the answer. 
Result so far: 9589.2641
If we subtract 53 from 80, we get 27.
Since there are no more digits in the dividend, we add a zero to the remainder making it 270, and continue the process.

On to step 11:
When dividing 270 by 53, we get 5 with a remainder of 5.
The number 5 becomes the next digit in our result. 
Result so far: 9589.26415
The remainder is 5 after subtracting 265 from 270.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Going ahead to step 12:
The number 53 fits into 50 0 times, leaving a remainder of 50.
The number 0 becomes the next digit in our result. 
Result so far: 9589.26415
If we subtract 0 from 50, we get 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

Moving on to step 13:
The number 53 fits into 500 9 times, leaving a remainder of 23.
The number 9 becomes the next digit in our result. 
Result so far: 9589.2641509
If we subtract 477 from 500, we get 23.
Since there are no more digits in the dividend, we add a zero to the remainder making it 230, and continue the process.

Let's proceed to step 14:
53 can be fit into 230 4 times, resulting in a remainder of 18.
Record the quotient 4 as the next digit in the result. 
Result so far: 9589.26415094
Subtract 212 from 230 to get 18.
Since there are no more digits in the dividend, we add a zero to the remainder making it 180, and continue the process.

The final result is 9589.26415094 with a remainder of 1.8e-08.