We look at the division of 55503604 by 204 
The aim is to understand the frequency of 204 in 55503604.

Advancing to step 1:
If we divide 5 by 204, we get 0 and a remainder of 5.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 5, we get 5.
Include the next digit (5) from the dividend after 5, then repeat: 55 / 204

Moving on to step 2:
55 divided by 204 is 0 with a remainder of 55.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 55 and we're left with 55.
Grab the next digit (5) from the dividend, add it to 55, then carry on: 555 / 204

Moving on to step 3:
204 goes into 555 2 times with a remainder of 147.
Record the quotient 2 as the next digit in the result. 
Result so far: 2.0
If we subtract 408 from 555, we get 147.
Append the next digit (0) from the dividend to 147 and continue with: 1470 / 204

On to step 4:
1470 divided by 204 is 7 with a remainder of 42.
Record the quotient 7 as the next digit in the result. 
Result so far: 27.0
Subtract 1428 from 1470 to get 42.
Include the next digit (3) from the dividend after 42, then repeat: 423 / 204

Step 5:
423 divided by 204 is 2 with a remainder of 15.
The next digit of our result is 2. 
Result so far: 272.0
If we take 408 away from 423, we end up with 15.
Take the next digit (6) from the dividend and append it to 15, then repeat: 156 / 204

On to step 6:
If we divide 156 by 204, we get 0 and a remainder of 156.
The number 0 becomes the next digit in our result. 
Result so far: 2720.0
Subtract 0 from 156 to get 156.
Include the next digit (0) from the dividend after 156, then repeat: 1560 / 204

Advancing to step 7:
The number 204 fits into 1560 7 times, leaving a remainder of 132.
The number 7 becomes the next digit in our result. 
Result so far: 27207.0
Deduct 1428 from 1560 and we're left with 132.
Include the next digit (4) from the dividend after 132, then repeat: 1324 / 204

On to step 8:
If we divide 1324 by 204, we get 6 and a remainder of 100.
The next digit of our result is 6. 
Result so far: 272076.0
Deduct 1224 from 1324 and we're left with 100.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1000, and continue the process.

Let's proceed to step 9:
204 goes into 1000 4 times with a remainder of 184.
Use 4 as the next digit of our solution. 
Result so far: 272076.4
Subtracting 816 from 1000 leaves us with 184.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1840, and continue the process.

Let's proceed to step 10:
If we divide 1840 by 204, we get 9 and a remainder of 4.
Write down 9 as next digit of the result. 
Result so far: 272076.49
Subtract 1836 from 1840 to get 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

On to step 11:
When dividing 40 by 204, we get 0 with a remainder of 40.
Put 0 as the next digit of the answer. 
Result so far: 272076.49
Subtract 0 from 40 to get 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Let's proceed to step 12:
When dividing 400 by 204, we get 1 with a remainder of 196.
Write down 1 as next digit of the result. 
Result so far: 272076.4901
Deduct 204 from 400 and we're left with 196.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1960, and continue the process.

Going ahead to step 13:
1960 divided by 204 is 9 with a remainder of 124.
Record the quotient 9 as the next digit in the result. 
Result so far: 272076.49019
Deduct 1836 from 1960 and we're left with 124.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1240, and continue the process.

On to step 14:
The number 204 fits into 1240 6 times, leaving a remainder of 16.
Record the quotient 6 as the next digit in the result. 
Result so far: 272076.490196
Deduct 1224 from 1240 and we're left with 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

Going ahead to step 15:
If we divide 160 by 204, we get 0 and a remainder of 160.
The number 0 becomes the next digit in our result. 
Result so far: 272076.490196
The remainder is 160 after subtracting 0 from 160.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1600, and continue the process.

Advancing to step 16:
204 goes into 1600 7 times with a remainder of 172.
Put 7 as the next digit of the answer. 
Result so far: 272076.49019607
Deduct 1428 from 1600 and we're left with 172.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1720, and continue the process.

The final outcome is 272076.49019607, with a leftover of 1.72e-07.