We're dividing 549603 by 53 
The aim is to understand the frequency of 53 in 549603.

On to step 1:
If we divide 5 by 53, we get 0 and a remainder of 5.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 5, we end up with 5.
Grab the next digit (4) from the dividend, add it to 5, then carry on: 54 / 53

Step 2:
53 goes into 54 1 times with a remainder of 1.
Use 1 as the next digit of our solution. 
Result so far: 1.0
Subtract 53 from 54 to get 1.
Bring next digit (9) of the dividend behind the 1 and repeat the process: 19 / 53

Advancing to step 3:
53 can be fit into 19 0 times, resulting in a remainder of 19.
Write down 0 as next digit of the result. 
Result so far: 10.0
If we subtract 0 from 19, we get 19.
Take the next digit (6) from the dividend and append it to 19, then repeat: 196 / 53

Going ahead to step 4:
196 divided by 53 is 3 with a remainder of 37.
Record the quotient 3 as the next digit in the result. 
Result so far: 103.0
Deduct 159 from 196 and we're left with 37.
Take the next digit (0) from the dividend and append it to 37, then repeat: 370 / 53

Going ahead to step 5:
If we divide 370 by 53, we get 6 and a remainder of 52.
Use 6 as the next digit of our solution. 
Result so far: 1036.0
Subtracting 318 from 370 leaves us with 52.
Take the next digit (3) from the dividend and append it to 52, then repeat: 523 / 53

Moving on to step 6:
53 goes into 523 9 times with a remainder of 46.
Use 9 as the next digit of our solution. 
Result so far: 10369.0
The remainder is 46 after subtracting 477 from 523.
Since there are no more digits in the dividend, we add a zero to the remainder making it 460, and continue the process.

Step 7:
When dividing 460 by 53, we get 8 with a remainder of 36.
The number 8 becomes the next digit in our result. 
Result so far: 10369.8
Subtracting 424 from 460 leaves us with 36.
Since there are no more digits in the dividend, we add a zero to the remainder making it 360, and continue the process.

Moving on to step 8:
53 goes into 360 6 times with a remainder of 42.
Put 6 as the next digit of the answer. 
Result so far: 10369.86
Subtracting 318 from 360 leaves us with 42.
Since there are no more digits in the dividend, we add a zero to the remainder making it 420, and continue the process.

On to step 9:
420 divided by 53 is 7 with a remainder of 49.
The next digit of our result is 7. 
Result so far: 10369.867
If we subtract 371 from 420, we get 49.
Since there are no more digits in the dividend, we add a zero to the remainder making it 490, and continue the process.

Advancing to step 10:
490 divided by 53 is 9 with a remainder of 13.
Write down 9 as next digit of the result. 
Result so far: 10369.8679
The remainder is 13 after subtracting 477 from 490.
Since there are no more digits in the dividend, we add a zero to the remainder making it 130, and continue the process.

Step 11:
53 goes into 130 2 times with a remainder of 24.
Put 2 as the next digit of the answer. 
Result so far: 10369.86792
Subtract 106 from 130 to get 24.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

Step 12:
If we divide 240 by 53, we get 4 and a remainder of 28.
The number 4 becomes the next digit in our result. 
Result so far: 10369.867924
If we take 212 away from 240, we end up with 28.
Since there are no more digits in the dividend, we add a zero to the remainder making it 280, and continue the process.

Let's proceed to step 13:
53 can be fit into 280 5 times, resulting in a remainder of 15.
Put 5 as the next digit of the answer. 
Result so far: 10369.8679245
Deduct 265 from 280 and we're left with 15.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

On to step 14:
53 can be fit into 150 2 times, resulting in a remainder of 44.
Put 2 as the next digit of the answer. 
Result so far: 10369.86792452
If we take 106 away from 150, we end up with 44.
Since there are no more digits in the dividend, we add a zero to the remainder making it 440, and continue the process.

The final outcome is 10369.86792452, with a leftover of 4.4e-08.