We're dividing 813105 by 25 
We want to figure out the number of times 813105 can be divided by 25.

On to step 1:
8 divided by 25 is 0 with a remainder of 8.
The next digit of our result is 0. 
Result so far: 0.0
Subtracting 0 from 8 leaves us with 8.
Bring next digit (1) of the dividend behind the 8 and repeat the process: 81 / 25

Step 2:
25 goes into 81 3 times with a remainder of 6.
The next digit of our result is 3. 
Result so far: 3.0
If we subtract 75 from 81, we get 6.
Fetch the next digit (3) from the dividend, attach it to 6 and continue: 63 / 25

Going ahead to step 3:
25 can be fit into 63 2 times, resulting in a remainder of 13.
Put 2 as the next digit of the answer. 
Result so far: 32.0
Subtracting 50 from 63 leaves us with 13.
Append the next digit (1) from the dividend to 13 and continue with: 131 / 25

Moving on to step 4:
25 goes into 131 5 times with a remainder of 6.
Use 5 as the next digit of our solution. 
Result so far: 325.0
Deduct 125 from 131 and we're left with 6.
Include the next digit (0) from the dividend after 6, then repeat: 60 / 25

Let's proceed to step 5:
The number 25 fits into 60 2 times, leaving a remainder of 10.
Use 2 as the next digit of our solution. 
Result so far: 3252.0
Deduct 50 from 60 and we're left with 10.
Take the next digit (5) from the dividend and append it to 10, then repeat: 105 / 25

Moving on to step 6:
The number 25 fits into 105 4 times, leaving a remainder of 5.
Write down 4 as next digit of the result. 
Result so far: 32524.0
Deduct 100 from 105 and we're left with 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Step 7:
The number 25 fits into 50 2 times, leaving a remainder of 0.
The number 2 becomes the next digit in our result. 
Result so far: 32524.2
The remainder is 0 after subtracting 50 from 50.
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:
0 divided by 25 is 0 with a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 32524.2
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.

Step 9:
25 goes into 0 0 times with a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 32524.2
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.

The final result is 32524.2 with a remainder of 0.0.