We're dividing 13809 by 53 
The aim is to understand the frequency of 53 in 13809.

Moving on to step 1:
The number 53 fits into 1 0 times, leaving a remainder of 1.
The next digit of our result is 0. 
Result so far: 0.0
The remainder is 1 after subtracting 0 from 1.
Append the next digit (3) from the dividend to 1 and continue with: 13 / 53

On to step 2:
53 can be fit into 13 0 times, resulting in a remainder of 13.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 13 and we're left with 13.
Include the next digit (8) from the dividend after 13, then repeat: 138 / 53

Going ahead to step 3:
When dividing 138 by 53, we get 2 with a remainder of 32.
Write down 2 as next digit of the result. 
Result so far: 2.0
Subtracting 106 from 138 leaves us with 32.
Append the next digit (0) from the dividend to 32 and continue with: 320 / 53

Going ahead to step 4:
320 divided by 53 is 6 with a remainder of 2.
Record the quotient 6 as the next digit in the result. 
Result so far: 26.0
Deduct 318 from 320 and we're left with 2.
Grab the next digit (9) from the dividend, add it to 2, then carry on: 29 / 53

Advancing to step 5:
53 can be fit into 29 0 times, resulting in a remainder of 29.
The number 0 becomes the next digit in our result. 
Result so far: 260.0
If we take 0 away from 29, we end up with 29.
Since there are no more digits in the dividend, we add a zero to the remainder making it 290, and continue the process.

Step 6:
290 divided by 53 is 5 with a remainder of 25.
Put 5 as the next digit of the answer. 
Result so far: 260.5
Deduct 265 from 290 and we're left with 25.
Since there are no more digits in the dividend, we add a zero to the remainder making it 250, and continue the process.

Moving on to step 7:
53 can be fit into 250 4 times, resulting in a remainder of 38.
The number 4 becomes the next digit in our result. 
Result so far: 260.54
Deduct 212 from 250 and we're left with 38.
Since there are no more digits in the dividend, we add a zero to the remainder making it 380, and continue the process.

Step 8:
53 can be fit into 380 7 times, resulting in a remainder of 9.
Record the quotient 7 as the next digit in the result. 
Result so far: 260.547
If we take 371 away from 380, we end up with 9.
Since there are no more digits in the dividend, we add a zero to the remainder making it 90, and continue the process.

Moving on to step 9:
If we divide 90 by 53, we get 1 and a remainder of 37.
Put 1 as the next digit of the answer. 
Result so far: 260.5471
Subtracting 53 from 90 leaves us 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.

Advancing to step 10:
53 can be fit into 370 6 times, resulting in a remainder of 52.
Record the quotient 6 as the next digit in the result. 
Result so far: 260.54716
Subtract 318 from 370 to get 52.
Since there are no more digits in the dividend, we add a zero to the remainder making it 520, and continue the process.

Going ahead to step 11:
53 goes into 520 9 times with a remainder of 43.
The next digit of our result is 9. 
Result so far: 260.547169
Subtract 477 from 520 to get 43.
Since there are no more digits in the dividend, we add a zero to the remainder making it 430, and continue the process.

Moving on to step 12:
430 divided by 53 is 8 with a remainder of 6.
The number 8 becomes the next digit in our result. 
Result so far: 260.5471698
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 13:
The number 53 fits into 60 1 times, leaving a remainder of 7.
Write down 1 as next digit of the result. 
Result so far: 260.54716981
Subtract 53 from 60 to get 7.
Since there are no more digits in the dividend, we add a zero to the remainder making it 70, and continue the process.

Our division results in 260.54716981 with a remaining 7e-09.