We're dividing 251731 by 2 
Our goal is to divide 251731 by 2.

Moving on to step 1:
2 goes into 2 1 times with a remainder of 0.
The next digit of our result is 1. 
Result so far: 1.0
Subtract 2 from 2 to get 0.
Grab the next digit (5) from the dividend, add it to 0, then carry on: 5 / 2

Going ahead to step 2:
2 can be fit into 5 2 times, resulting in a remainder of 1.
Record the quotient 2 as the next digit in the result. 
Result so far: 12.0
Deduct 4 from 5 and we're left with 1.
Include the next digit (1) from the dividend after 1, then repeat: 11 / 2

On to step 3:
When dividing 11 by 2, we get 5 with a remainder of 1.
Write down 5 as next digit of the result. 
Result so far: 125.0
If we take 10 away from 11, we end up with 1.
Include the next digit (7) from the dividend after 1, then repeat: 17 / 2

Let's proceed to step 4:
The number 2 fits into 17 8 times, leaving a remainder of 1.
The next digit of our result is 8. 
Result so far: 1258.0
If we subtract 16 from 17, we get 1.
Grab the next digit (3) from the dividend, add it to 1, then carry on: 13 / 2

On to step 5:
2 goes into 13 6 times with a remainder of 1.
Write down 6 as next digit of the result. 
Result so far: 12586.0
Subtracting 12 from 13 leaves us with 1.
Append the next digit (1) from the dividend to 1 and continue with: 11 / 2

Step 6:
2 can be fit into 11 5 times, resulting in a remainder of 1.
Record the quotient 5 as the next digit in the result. 
Result so far: 125865.0
Subtracting 10 from 11 leaves us with 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:
10 divided by 2 is 5 with a remainder of 0.
The next digit of our result is 5. 
Result so far: 125865.5
Subtract 10 from 10 to get 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 8:
2 goes into 0 0 times with a remainder of 0.
Write down 0 as next digit of the result. 
Result so far: 125865.5
Subtract 0 from 0 to get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Advancing to step 9:
The number 2 fits into 0 0 times, leaving a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 125865.5
If we subtract 0 from 0, we get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

After the division, we end up with 125865.5 and a remainder of 0.0.