We're dividing 172851 by 604 
We're looking to find how many times 604 goes into 172851.

Going ahead to step 1:
1 divided by 604 is 0 with a remainder of 1.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 1 and we're left with 1.
Bring next digit (7) of the dividend behind the 1 and repeat the process: 17 / 604

Let's proceed to step 2:
If we divide 17 by 604, we get 0 and a remainder of 17.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 17, we end up with 17.
Append the next digit (2) from the dividend to 17 and continue with: 172 / 604

Step 3:
604 can be fit into 172 0 times, resulting in a remainder of 172.
The next digit of our result is 0. 
Result so far: 0.0
The remainder is 172 after subtracting 0 from 172.
Include the next digit (8) from the dividend after 172, then repeat: 1728 / 604

Let's proceed to step 4:
The number 604 fits into 1728 2 times, leaving a remainder of 520.
The number 2 becomes the next digit in our result. 
Result so far: 2.0
If we take 1208 away from 1728, we end up with 520.
Fetch the next digit (5) from the dividend, attach it to 520 and continue: 5205 / 604

Going ahead to step 5:
The number 604 fits into 5205 8 times, leaving a remainder of 373.
The number 8 becomes the next digit in our result. 
Result so far: 28.0
If we take 4832 away from 5205, we end up with 373.
Include the next digit (1) from the dividend after 373, then repeat: 3731 / 604

Moving on to step 6:
604 goes into 3731 6 times with a remainder of 107.
Put 6 as the next digit of the answer. 
Result so far: 286.0
If we take 3624 away from 3731, we end up with 107.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1070, and continue the process.

Going ahead to step 7:
If we divide 1070 by 604, we get 1 and a remainder of 466.
The number 1 becomes the next digit in our result. 
Result so far: 286.1
Deduct 604 from 1070 and we're left with 466.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4660, and continue the process.

On to step 8:
604 can be fit into 4660 7 times, resulting in a remainder of 432.
The number 7 becomes the next digit in our result. 
Result so far: 286.17
Subtracting 4228 from 4660 leaves us with 432.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4320, and continue the process.

Going ahead to step 9:
4320 divided by 604 is 7 with a remainder of 92.
Use 7 as the next digit of our solution. 
Result so far: 286.177
If we subtract 4228 from 4320, we get 92.
Since there are no more digits in the dividend, we add a zero to the remainder making it 920, and continue the process.

The final result is 286.177 with a remainder of 0.0092.