We look at the division of 25381542 by 821 
We're looking to find how many times 821 goes into 25381542.

Step 1:
If we divide 2 by 821, we get 0 and a remainder of 2.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 2 and we're left with 2.
Take the next digit (5) from the dividend and append it to 2, then repeat: 25 / 821

Step 2:
821 goes into 25 0 times with a remainder of 25.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 25 leaves us with 25.
Fetch the next digit (3) from the dividend, attach it to 25 and continue: 253 / 821

Step 3:
The number 821 fits into 253 0 times, leaving a remainder of 253.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 253, we end up with 253.
Fetch the next digit (8) from the dividend, attach it to 253 and continue: 2538 / 821

Let's proceed to step 4:
When dividing 2538 by 821, we get 3 with a remainder of 75.
The number 3 becomes the next digit in our result. 
Result so far: 3.0
Deduct 2463 from 2538 and we're left with 75.
Take the next digit (1) from the dividend and append it to 75, then repeat: 751 / 821

On to step 5:
The number 821 fits into 751 0 times, leaving a remainder of 751.
Write down 0 as next digit of the result. 
Result so far: 30.0
If we take 0 away from 751, we end up with 751.
Include the next digit (5) from the dividend after 751, then repeat: 7515 / 821

Step 6:
821 goes into 7515 9 times with a remainder of 126.
Write down 9 as next digit of the result. 
Result so far: 309.0
Subtract 7389 from 7515 to get 126.
Grab the next digit (4) from the dividend, add it to 126, then carry on: 1264 / 821

Let's proceed to step 7:
When dividing 1264 by 821, we get 1 with a remainder of 443.
Write down 1 as next digit of the result. 
Result so far: 3091.0
Deduct 821 from 1264 and we're left with 443.
Take the next digit (2) from the dividend and append it to 443, then repeat: 4432 / 821

On to step 8:
821 can be fit into 4432 5 times, resulting in a remainder of 327.
The number 5 becomes the next digit in our result. 
Result so far: 30915.0
If we subtract 4105 from 4432, we get 327.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3270, and continue the process.

Step 9:
When dividing 3270 by 821, we get 3 with a remainder of 807.
Use 3 as the next digit of our solution. 
Result so far: 30915.3
If we subtract 2463 from 3270, we get 807.
Since there are no more digits in the dividend, we add a zero to the remainder making it 8070, and continue the process.

Moving on to step 10:
8070 divided by 821 is 9 with a remainder of 681.
Write down 9 as next digit of the result. 
Result so far: 30915.39
The remainder is 681 after subtracting 7389 from 8070.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6810, and continue the process.

Moving on to step 11:
821 can be fit into 6810 8 times, resulting in a remainder of 242.
The number 8 becomes the next digit in our result. 
Result so far: 30915.398
If we take 6568 away from 6810, we end up with 242.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2420, and continue the process.

Going ahead to step 12:
If we divide 2420 by 821, we get 2 and a remainder of 778.
Record the quotient 2 as the next digit in the result. 
Result so far: 30915.3982
Subtracting 1642 from 2420 leaves us with 778.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7780, and continue the process.

Moving on to step 13:
821 can be fit into 7780 9 times, resulting in a remainder of 391.
Record the quotient 9 as the next digit in the result. 
Result so far: 30915.39829
Subtract 7389 from 7780 to get 391.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3910, and continue the process.

Let's proceed to step 14:
821 goes into 3910 4 times with a remainder of 626.
The number 4 becomes the next digit in our result. 
Result so far: 30915.398294
Subtract 3284 from 3910 to get 626.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6260, and continue the process.

On to step 15:
821 can be fit into 6260 7 times, resulting in a remainder of 513.
Put 7 as the next digit of the answer. 
Result so far: 30915.3982947
Subtract 5747 from 6260 to get 513.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5130, and continue the process.

Going ahead to step 16:
The number 821 fits into 5130 6 times, leaving a remainder of 204.
The next digit of our result is 6. 
Result so far: 30915.39829476
The remainder is 204 after subtracting 4926 from 5130.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2040, and continue the process.

The final result is 30915.39829476 with a remainder of 2.04e-07.