We're dividing 851225 by 25 
Our goal is to divide 851225 by 25.

Moving on to step 1:
25 goes into 8 0 times with a remainder of 8.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 8 after subtracting 0 from 8.
Bring next digit (5) of the dividend behind the 8 and repeat the process: 85 / 25

Going ahead to step 2:
When dividing 85 by 25, we get 3 with a remainder of 10.
Put 3 as the next digit of the answer. 
Result so far: 3.0
If we subtract 75 from 85, we get 10.
Fetch the next digit (1) from the dividend, attach it to 10 and continue: 101 / 25

Advancing to step 3:
The number 25 fits into 101 4 times, leaving a remainder of 1.
Write down 4 as next digit of the result. 
Result so far: 34.0
Subtracting 100 from 101 leaves us with 1.
Take the next digit (2) from the dividend and append it to 1, then repeat: 12 / 25

Advancing to step 4:
If we divide 12 by 25, we get 0 and a remainder of 12.
Put 0 as the next digit of the answer. 
Result so far: 340.0
If we take 0 away from 12, we end up with 12.
Grab the next digit (2) from the dividend, add it to 12, then carry on: 122 / 25

Advancing to step 5:
The number 25 fits into 122 4 times, leaving a remainder of 22.
Write down 4 as next digit of the result. 
Result so far: 3404.0
If we subtract 100 from 122, we get 22.
Include the next digit (5) from the dividend after 22, then repeat: 225 / 25

Advancing to step 6:
25 can be fit into 225 9 times, resulting in a remainder of 0.
The number 9 becomes the next digit in our result. 
Result so far: 34049.0
Subtract 225 from 225 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.

Moving on to step 7:
25 goes into 0 0 times with a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 34049.0
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.

Going ahead to step 8:
0 divided by 25 is 0 with a remainder of 0.
The next digit of our result is 0. 
Result so far: 34049.0
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.

After the division, we end up with 34049.0 and a remainder of 0.0.