We look at the division of 454431 by 53 
The aim is to understand the frequency of 53 in 454431.

Step 1:
53 can be fit into 4 0 times, resulting in a remainder of 4.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtract 0 from 4 to get 4.
Append the next digit (5) from the dividend to 4 and continue with: 45 / 53

Step 2:
The number 53 fits into 45 0 times, leaving a remainder of 45.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 45, we get 45.
Append the next digit (4) from the dividend to 45 and continue with: 454 / 53

Let's proceed to step 3:
When dividing 454 by 53, we get 8 with a remainder of 30.
The next digit of our result is 8. 
Result so far: 8.0
Subtracting 424 from 454 leaves us with 30.
Include the next digit (4) from the dividend after 30, then repeat: 304 / 53

Let's proceed to step 4:
53 can be fit into 304 5 times, resulting in a remainder of 39.
The number 5 becomes the next digit in our result. 
Result so far: 85.0
If we subtract 265 from 304, we get 39.
Grab the next digit (3) from the dividend, add it to 39, then carry on: 393 / 53

On to step 5:
If we divide 393 by 53, we get 7 and a remainder of 22.
Put 7 as the next digit of the answer. 
Result so far: 857.0
If we take 371 away from 393, we end up with 22.
Include the next digit (1) from the dividend after 22, then repeat: 221 / 53

Advancing to step 6:
The number 53 fits into 221 4 times, leaving a remainder of 9.
Put 4 as the next digit of the answer. 
Result so far: 8574.0
The remainder is 9 after subtracting 212 from 221.
Since there are no more digits in the dividend, we add a zero to the remainder making it 90, and continue the process.

Let's proceed to step 7:
When dividing 90 by 53, we get 1 with a remainder of 37.
Write down 1 as next digit of the result. 
Result so far: 8574.1
If we take 53 away from 90, we end up with 37.
Since there are no more digits in the dividend, we add a zero to the remainder making it 370, and continue the process.

On to step 8:
370 divided by 53 is 6 with a remainder of 52.
Record the quotient 6 as the next digit in the result. 
Result so far: 8574.16
Subtracting 318 from 370 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.

Advancing to step 9:
53 can be fit into 520 9 times, resulting in a remainder of 43.
Use 9 as the next digit of our solution. 
Result so far: 8574.169
If we take 477 away from 520, we end up with 43.
Since there are no more digits in the dividend, we add a zero to the remainder making it 430, and continue the process.

Advancing to step 10:
430 divided by 53 is 8 with a remainder of 6.
Record the quotient 8 as the next digit in the result. 
Result so far: 8574.1698
If we take 424 away from 430, we end up with 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Step 11:
When dividing 60 by 53, we get 1 with a remainder of 7.
The next digit of our result is 1. 
Result so far: 8574.16981
Subtracting 53 from 60 leaves us with 7.
Since there are no more digits in the dividend, we add a zero to the remainder making it 70, and continue the process.

Let's proceed to step 12:
The number 53 fits into 70 1 times, leaving a remainder of 17.
Use 1 as the next digit of our solution. 
Result so far: 8574.169811
Subtract 53 from 70 to get 17.
Since there are no more digits in the dividend, we add a zero to the remainder making it 170, and continue the process.

Our division results in 8574.169811 with a remaining 1.7e-06.