We look at the division of 18504151 by 204 
We're looking to find how many times 204 goes into 18504151.

Let's proceed to step 1:
204 can be fit into 1 0 times, resulting in a remainder of 1.
Use 0 as the next digit of our solution. 
Result so far: 0.0
The remainder is 1 after subtracting 0 from 1.
Append the next digit (8) from the dividend to 1 and continue with: 18 / 204

Step 2:
If we divide 18 by 204, we get 0 and a remainder of 18.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we subtract 0 from 18, we get 18.
Fetch the next digit (5) from the dividend, attach it to 18 and continue: 185 / 204

Advancing to step 3:
When dividing 185 by 204, we get 0 with a remainder of 185.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 185, we get 185.
Take the next digit (0) from the dividend and append it to 185, then repeat: 1850 / 204

On to step 4:
204 can be fit into 1850 9 times, resulting in a remainder of 14.
Write down 9 as next digit of the result. 
Result so far: 9.0
If we subtract 1836 from 1850, we get 14.
Append the next digit (4) from the dividend to 14 and continue with: 144 / 204

Going ahead to step 5:
If we divide 144 by 204, we get 0 and a remainder of 144.
The number 0 becomes the next digit in our result. 
Result so far: 90.0
Deduct 0 from 144 and we're left with 144.
Take the next digit (1) from the dividend and append it to 144, then repeat: 1441 / 204

Advancing to step 6:
If we divide 1441 by 204, we get 7 and a remainder of 13.
The number 7 becomes the next digit in our result. 
Result so far: 907.0
The remainder is 13 after subtracting 1428 from 1441.
Bring next digit (5) of the dividend behind the 13 and repeat the process: 135 / 204

On to step 7:
204 can be fit into 135 0 times, resulting in a remainder of 135.
Put 0 as the next digit of the answer. 
Result so far: 9070.0
The remainder is 135 after subtracting 0 from 135.
Bring next digit (1) of the dividend behind the 135 and repeat the process: 1351 / 204

On to step 8:
When dividing 1351 by 204, we get 6 with a remainder of 127.
Put 6 as the next digit of the answer. 
Result so far: 90706.0
Subtract 1224 from 1351 to get 127.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1270, and continue the process.

Step 9:
1270 divided by 204 is 6 with a remainder of 46.
The next digit of our result is 6. 
Result so far: 90706.6
If we subtract 1224 from 1270, we get 46.
Since there are no more digits in the dividend, we add a zero to the remainder making it 460, and continue the process.

Step 10:
If we divide 460 by 204, we get 2 and a remainder of 52.
Record the quotient 2 as the next digit in the result. 
Result so far: 90706.62
Subtract 408 from 460 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.

Let's proceed to step 11:
The number 204 fits into 520 2 times, leaving a remainder of 112.
The number 2 becomes the next digit in our result. 
Result so far: 90706.622
Subtracting 408 from 520 leaves us with 112.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1120, and continue the process.

The final outcome is 90706.622, with a leftover of 0.0112.