Let's divide 172351 by 86
Our goal is to divide 172351 by 86.

Let's proceed to step 1:
When dividing 1 by 86, we get 0 with a remainder of 1.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 1 leaves us with 1.
Grab the next digit (7) from the dividend, add it to 1, then carry on: 17 / 86

Moving on to step 2:
When dividing 17 by 86, we get 0 with a remainder of 17.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 17 to get 17.
Bring next digit (2) of the dividend behind the 17 and repeat the process: 172 / 86

Going ahead to step 3:
If we divide 172 by 86, we get 2 and a remainder of 0.
The number 2 becomes the next digit in our result. 
Result so far: 2.0
Subtracting 172 from 172 leaves us with 0.
Include the next digit (3) from the dividend after 0, then repeat: 3 / 86

Step 4:
86 can be fit into 3 0 times, resulting in a remainder of 3.
Use 0 as the next digit of our solution. 
Result so far: 20.0
If we take 0 away from 3, we end up with 3.
Bring next digit (5) of the dividend behind the 3 and repeat the process: 35 / 86

Moving on to step 5:
86 goes into 35 0 times with a remainder of 35.
Put 0 as the next digit of the answer. 
Result so far: 200.0
Deduct 0 from 35 and we're left with 35.
Grab the next digit (1) from the dividend, add it to 35, then carry on: 351 / 86

Going ahead to step 6:
86 goes into 351 4 times with a remainder of 7.
Record the quotient 4 as the next digit in the result. 
Result so far: 2004.0
Deduct 344 from 351 and we're left with 7.
Since there are no more digits in the dividend, we add a zero to the remainder making it 70, and continue the process.

On to step 7:
70 divided by 86 is 0 with a remainder of 70.
The number 0 becomes the next digit in our result. 
Result so far: 2004.0
Subtract 0 from 70 to get 70.
Since there are no more digits in the dividend, we add a zero to the remainder making it 700, and continue the process.

Step 8:
86 goes into 700 8 times with a remainder of 12.
Write down 8 as next digit of the result. 
Result so far: 2004.08
If we subtract 688 from 700, we get 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

On to step 9:
When dividing 120 by 86, we get 1 with a remainder of 34.
Record the quotient 1 as the next digit in the result. 
Result so far: 2004.081
The remainder is 34 after subtracting 86 from 120.
Since there are no more digits in the dividend, we add a zero to the remainder making it 340, and continue the process.

Advancing to step 10:
If we divide 340 by 86, we get 3 and a remainder of 82.
Use 3 as the next digit of our solution. 
Result so far: 2004.0813
If we subtract 258 from 340, we get 82.
Since there are no more digits in the dividend, we add a zero to the remainder making it 820, and continue the process.

Let's proceed to step 11:
If we divide 820 by 86, we get 9 and a remainder of 46.
Use 9 as the next digit of our solution. 
Result so far: 2004.08139
Subtract 774 from 820 to 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 12:
If we divide 460 by 86, we get 5 and a remainder of 30.
The next digit of our result is 5. 
Result so far: 2004.081395
Subtracting 430 from 460 leaves us with 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

Moving on to step 13:
If we divide 300 by 86, we get 3 and a remainder of 42.
Put 3 as the next digit of the answer. 
Result so far: 2004.0813953
Deduct 258 from 300 and we're left 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 14:
The number 86 fits into 420 4 times, leaving a remainder of 76.
The next digit of our result is 4. 
Result so far: 2004.08139534
Deduct 344 from 420 and we're left with 76.
Since there are no more digits in the dividend, we add a zero to the remainder making it 760, and continue the process.

Our division results in 2004.08139534 with a remaining 7.6e-08.