We're dividing 25863551 by 820 
Our goal is to divide 25863551 by 820.

Going ahead to step 1:
When dividing 2 by 820, we get 0 with a remainder of 2.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 2 to get 2.
Take the next digit (5) from the dividend and append it to 2, then repeat: 25 / 820

Let's proceed to step 2:
The number 820 fits into 25 0 times, leaving a remainder of 25.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we subtract 0 from 25, we get 25.
Fetch the next digit (8) from the dividend, attach it to 25 and continue: 258 / 820

On to step 3:
258 divided by 820 is 0 with a remainder of 258.
The next digit of our result is 0. 
Result so far: 0.0
Subtracting 0 from 258 leaves us with 258.
Grab the next digit (6) from the dividend, add it to 258, then carry on: 2586 / 820

Advancing to step 4:
2586 divided by 820 is 3 with a remainder of 126.
The next digit of our result is 3. 
Result so far: 3.0
If we take 2460 away from 2586, we end up with 126.
Grab the next digit (3) from the dividend, add it to 126, then carry on: 1263 / 820

Moving on to step 5:
If we divide 1263 by 820, we get 1 and a remainder of 443.
Put 1 as the next digit of the answer. 
Result so far: 31.0
If we take 820 away from 1263, we end up with 443.
Include the next digit (5) from the dividend after 443, then repeat: 4435 / 820

Advancing to step 6:
When dividing 4435 by 820, we get 5 with a remainder of 335.
Write down 5 as next digit of the result. 
Result so far: 315.0
Subtracting 4100 from 4435 leaves us with 335.
Take the next digit (5) from the dividend and append it to 335, then repeat: 3355 / 820

On to step 7:
3355 divided by 820 is 4 with a remainder of 75.
Record the quotient 4 as the next digit in the result. 
Result so far: 3154.0
If we take 3280 away from 3355, we end up with 75.
Take the next digit (1) from the dividend and append it to 75, then repeat: 751 / 820

Advancing to step 8:
751 divided by 820 is 0 with a remainder of 751.
Record the quotient 0 as the next digit in the result. 
Result so far: 31540.0
Deduct 0 from 751 and we're left with 751.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7510, and continue the process.

Going ahead to step 9:
When dividing 7510 by 820, we get 9 with a remainder of 130.
Use 9 as the next digit of our solution. 
Result so far: 31540.9
The remainder is 130 after subtracting 7380 from 7510.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1300, and continue the process.

Let's proceed to step 10:
The number 820 fits into 1300 1 times, leaving a remainder of 480.
The next digit of our result is 1. 
Result so far: 31540.91
Subtracting 820 from 1300 leaves us with 480.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4800, and continue the process.

On to step 11:
If we divide 4800 by 820, we get 5 and a remainder of 700.
Write down 5 as next digit of the result. 
Result so far: 31540.915
The remainder is 700 after subtracting 4100 from 4800.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7000, and continue the process.

Moving on to step 12:
820 goes into 7000 8 times with a remainder of 440.
Use 8 as the next digit of our solution. 
Result so far: 31540.9158
Subtracting 6560 from 7000 leaves us with 440.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4400, and continue the process.

Moving on to step 13:
820 can be fit into 4400 5 times, resulting in a remainder of 300.
The number 5 becomes the next digit in our result. 
Result so far: 31540.91585
If we subtract 4100 from 4400, we get 300.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3000, and continue the process.

Step 14:
If we divide 3000 by 820, we get 3 and a remainder of 540.
The number 3 becomes the next digit in our result. 
Result so far: 31540.915853
Deduct 2460 from 3000 and we're left with 540.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5400, and continue the process.

Step 15:
The number 820 fits into 5400 6 times, leaving a remainder of 480.
Use 6 as the next digit of our solution. 
Result so far: 31540.9158536
Subtracting 4920 from 5400 leaves us with 480.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4800, and continue the process.

Going ahead to step 16:
When dividing 4800 by 820, we get 5 with a remainder of 700.
Record the quotient 5 as the next digit in the result. 
Result so far: 31540.91585365
Subtracting 4100 from 4800 leaves us with 700.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7000, and continue the process.

The final result is 31540.91585365 with a remainder of 7e-07.