We look at the division of 21865925 by 815 
We're looking to find how many times 815 goes into 21865925.

Going ahead to step 1:
If we divide 2 by 815, we get 0 and a remainder of 2.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtracting 0 from 2 leaves us with 2.
Bring next digit (1) of the dividend behind the 2 and repeat the process: 21 / 815

Moving on to step 2:
21 divided by 815 is 0 with a remainder of 21.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 21, we end up with 21.
Append the next digit (8) from the dividend to 21 and continue with: 218 / 815

Moving on to step 3:
815 can be fit into 218 0 times, resulting in a remainder of 218.
The next digit of our result is 0. 
Result so far: 0.0
Subtract 0 from 218 to get 218.
Include the next digit (6) from the dividend after 218, then repeat: 2186 / 815

Step 4:
If we divide 2186 by 815, we get 2 and a remainder of 556.
The next digit of our result is 2. 
Result so far: 2.0
Deduct 1630 from 2186 and we're left with 556.
Append the next digit (5) from the dividend to 556 and continue with: 5565 / 815

On to step 5:
815 goes into 5565 6 times with a remainder of 675.
Write down 6 as next digit of the result. 
Result so far: 26.0
The remainder is 675 after subtracting 4890 from 5565.
Fetch the next digit (9) from the dividend, attach it to 675 and continue: 6759 / 815

Let's proceed to step 6:
If we divide 6759 by 815, we get 8 and a remainder of 239.
Record the quotient 8 as the next digit in the result. 
Result so far: 268.0
If we subtract 6520 from 6759, we get 239.
Include the next digit (2) from the dividend after 239, then repeat: 2392 / 815

Moving on to step 7:
815 goes into 2392 2 times with a remainder of 762.
Put 2 as the next digit of the answer. 
Result so far: 2682.0
Deduct 1630 from 2392 and we're left with 762.
Grab the next digit (5) from the dividend, add it to 762, then carry on: 7625 / 815

Advancing to step 8:
7625 divided by 815 is 9 with a remainder of 290.
Record the quotient 9 as the next digit in the result. 
Result so far: 26829.0
Subtracting 7335 from 7625 leaves us with 290.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2900, and continue the process.

Advancing to step 9:
815 can be fit into 2900 3 times, resulting in a remainder of 455.
Put 3 as the next digit of the answer. 
Result so far: 26829.3
If we subtract 2445 from 2900, we get 455.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4550, and continue the process.

Going ahead to step 10:
815 goes into 4550 5 times with a remainder of 475.
Use 5 as the next digit of our solution. 
Result so far: 26829.35
If we subtract 4075 from 4550, we get 475.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4750, and continue the process.

Step 11:
When dividing 4750 by 815, we get 5 with a remainder of 675.
The next digit of our result is 5. 
Result so far: 26829.355
The remainder is 675 after subtracting 4075 from 4750.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6750, and continue the process.

In conclusion, the division gives 26829.355 with a balance of 0.0675.