We look at the division of 871831 by 25 
We want to divide 871831 by 25.

Moving on to step 1:
25 goes into 8 0 times with a remainder of 8.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 8 to get 8.
Take the next digit (7) from the dividend and append it to 8, then repeat: 87 / 25

Advancing to step 2:
If we divide 87 by 25, we get 3 and a remainder of 12.
Put 3 as the next digit of the answer. 
Result so far: 3.0
If we subtract 75 from 87, we get 12.
Append the next digit (1) from the dividend to 12 and continue with: 121 / 25

Moving on to step 3:
25 goes into 121 4 times with a remainder of 21.
Put 4 as the next digit of the answer. 
Result so far: 34.0
The remainder is 21 after subtracting 100 from 121.
Grab the next digit (8) from the dividend, add it to 21, then carry on: 218 / 25

On to step 4:
218 divided by 25 is 8 with a remainder of 18.
Write down 8 as next digit of the result. 
Result so far: 348.0
Deduct 200 from 218 and we're left with 18.
Grab the next digit (3) from the dividend, add it to 18, then carry on: 183 / 25

On to step 5:
When dividing 183 by 25, we get 7 with a remainder of 8.
Use 7 as the next digit of our solution. 
Result so far: 3487.0
Deduct 175 from 183 and we're left with 8.
Fetch the next digit (1) from the dividend, attach it to 8 and continue: 81 / 25

Advancing to step 6:
The number 25 fits into 81 3 times, leaving a remainder of 6.
Put 3 as the next digit of the answer. 
Result so far: 34873.0
If we subtract 75 from 81, we get 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Advancing to step 7:
25 goes into 60 2 times with a remainder of 10.
Use 2 as the next digit of our solution. 
Result so far: 34873.2
If we take 50 away from 60, we end up with 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

On to step 8:
100 divided by 25 is 4 with a remainder of 0.
Record the quotient 4 as the next digit in the result. 
Result so far: 34873.24
Subtract 100 from 100 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:
If we divide 0 by 25, we get 0 and a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 34873.24
Deduct 0 from 0 and we're left 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.

Step 10:
When dividing 0 by 25, we get 0 with a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 34873.24
If we take 0 away from 0, 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.

The final result is 34873.24 with a remainder of 0.0.