We divide 172491 by 2
Our goal is to divide 172491 by 2.

Moving on to step 1:
The number 2 fits into 1 0 times, leaving a remainder of 1.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtracting 0 from 1 leaves us with 1.
Include the next digit (7) from the dividend after 1, then repeat: 17 / 2

Moving on to step 2:
When dividing 17 by 2, we get 8 with a remainder of 1.
Put 8 as the next digit of the answer. 
Result so far: 8.0
Deduct 16 from 17 and we're left with 1.
Grab the next digit (2) from the dividend, add it to 1, then carry on: 12 / 2

Advancing to step 3:
2 goes into 12 6 times with a remainder of 0.
The next digit of our result is 6. 
Result so far: 86.0
The remainder is 0 after subtracting 12 from 12.
Take the next digit (4) from the dividend and append it to 0, then repeat: 4 / 2

Going ahead to step 4:
2 can be fit into 4 2 times, resulting in a remainder of 0.
Write down 2 as next digit of the result. 
Result so far: 862.0
The remainder is 0 after subtracting 4 from 4.
Bring next digit (9) of the dividend behind the 0 and repeat the process: 9 / 2

Let's proceed to step 5:
The number 2 fits into 9 4 times, leaving a remainder of 1.
Put 4 as the next digit of the answer. 
Result so far: 8624.0
The remainder is 1 after subtracting 8 from 9.
Append the next digit (1) from the dividend to 1 and continue with: 11 / 2

Going ahead to step 6:
2 goes into 11 5 times with a remainder of 1.
Use 5 as the next digit of our solution. 
Result so far: 86245.0
If we subtract 10 from 11, we get 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

On to step 7:
The number 2 fits into 10 5 times, leaving a remainder of 0.
Record the quotient 5 as the next digit in the result. 
Result so far: 86245.5
If we take 10 away from 10, we end up with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Going ahead to step 8:
0 divided by 2 is 0 with a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 86245.5
Subtracting 0 from 0 leaves us with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

On to step 9:
2 goes into 0 0 times with a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 86245.5
The remainder is 0 after subtracting 0 from 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

In conclusion, the division gives 86245.5 with a balance of 0.0.