We look at the division of 534525 by 53 
The aim is to understand the frequency of 53 in 534525.

Step 1:
When dividing 5 by 53, we get 0 with a remainder of 5.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 5 and we're left with 5.
Grab the next digit (3) from the dividend, add it to 5, then carry on: 53 / 53

Going ahead to step 2:
53 can be fit into 53 1 times, resulting in a remainder of 0.
Write down 1 as next digit of the result. 
Result so far: 1.0
Subtracting 53 from 53 leaves us with 0.
Take the next digit (4) from the dividend and append it to 0, then repeat: 4 / 53

Let's proceed to step 3:
4 divided by 53 is 0 with a remainder of 4.
Write down 0 as next digit of the result. 
Result so far: 10.0
Subtracting 0 from 4 leaves us with 4.
Take the next digit (5) from the dividend and append it to 4, then repeat: 45 / 53

Moving on to step 4:
The number 53 fits into 45 0 times, leaving a remainder of 45.
Record the quotient 0 as the next digit in the result. 
Result so far: 100.0
If we take 0 away from 45, we end up with 45.
Fetch the next digit (2) from the dividend, attach it to 45 and continue: 452 / 53

Step 5:
The number 53 fits into 452 8 times, leaving a remainder of 28.
The number 8 becomes the next digit in our result. 
Result so far: 1008.0
Subtracting 424 from 452 leaves us with 28.
Grab the next digit (5) from the dividend, add it to 28, then carry on: 285 / 53

Step 6:
The number 53 fits into 285 5 times, leaving a remainder of 20.
Use 5 as the next digit of our solution. 
Result so far: 10085.0
Subtracting 265 from 285 leaves us with 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Step 7:
The number 53 fits into 200 3 times, leaving a remainder of 41.
The number 3 becomes the next digit in our result. 
Result so far: 10085.3
If we subtract 159 from 200, we get 41.
Since there are no more digits in the dividend, we add a zero to the remainder making it 410, and continue the process.

Let's proceed to step 8:
410 divided by 53 is 7 with a remainder of 39.
The next digit of our result is 7. 
Result so far: 10085.37
If we take 371 away from 410, we end up with 39.
Since there are no more digits in the dividend, we add a zero to the remainder making it 390, and continue the process.

Step 9:
390 divided by 53 is 7 with a remainder of 19.
Record the quotient 7 as the next digit in the result. 
Result so far: 10085.377
Subtracting 371 from 390 leaves us with 19.
Since there are no more digits in the dividend, we add a zero to the remainder making it 190, and continue the process.

The final result is 10085.377 with a remainder of 0.0019.