Let's divide 20851 by 82
We want to divide 20851 by 82.

Step 1:
When dividing 2 by 82, we get 0 with a remainder of 2.
Write down 0 as next digit of the result. 
Result so far: 0.0
The remainder is 2 after subtracting 0 from 2.
Append the next digit (0) from the dividend to 2 and continue with: 20 / 82

Step 2:
20 divided by 82 is 0 with a remainder of 20.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we take 0 away from 20, we end up with 20.
Include the next digit (8) from the dividend after 20, then repeat: 208 / 82

Moving on to step 3:
82 can be fit into 208 2 times, resulting in a remainder of 44.
Use 2 as the next digit of our solution. 
Result so far: 2.0
If we subtract 164 from 208, we get 44.
Bring next digit (5) of the dividend behind the 44 and repeat the process: 445 / 82

Going ahead to step 4:
445 divided by 82 is 5 with a remainder of 35.
Put 5 as the next digit of the answer. 
Result so far: 25.0
Subtracting 410 from 445 leaves us with 35.
Bring next digit (1) of the dividend behind the 35 and repeat the process: 351 / 82

Let's proceed to step 5:
82 can be fit into 351 4 times, resulting in a remainder of 23.
Put 4 as the next digit of the answer. 
Result so far: 254.0
Subtracting 328 from 351 leaves us with 23.
Since there are no more digits in the dividend, we add a zero to the remainder making it 230, and continue the process.

On to step 6:
When dividing 230 by 82, we get 2 with a remainder of 66.
The number 2 becomes the next digit in our result. 
Result so far: 254.2
If we subtract 164 from 230, we get 66.
Since there are no more digits in the dividend, we add a zero to the remainder making it 660, and continue the process.

Going ahead to step 7:
82 can be fit into 660 8 times, resulting in a remainder of 4.
Record the quotient 8 as the next digit in the result. 
Result so far: 254.28
If we take 656 away from 660, we end up with 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Let's proceed to step 8:
The number 82 fits into 40 0 times, leaving a remainder of 40.
The number 0 becomes the next digit in our result. 
Result so far: 254.28
Subtracting 0 from 40 leaves us with 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Advancing to step 9:
When dividing 400 by 82, we get 4 with a remainder of 72.
Record the quotient 4 as the next digit in the result. 
Result so far: 254.2804
If we subtract 328 from 400, we get 72.
Since there are no more digits in the dividend, we add a zero to the remainder making it 720, and continue the process.

Let's proceed to step 10:
82 can be fit into 720 8 times, resulting in a remainder of 64.
Record the quotient 8 as the next digit in the result. 
Result so far: 254.28048
Deduct 656 from 720 and we're left with 64.
Since there are no more digits in the dividend, we add a zero to the remainder making it 640, and continue the process.

Advancing to step 11:
82 goes into 640 7 times with a remainder of 66.
Use 7 as the next digit of our solution. 
Result so far: 254.280487
Deduct 574 from 640 and we're left with 66.
Since there are no more digits in the dividend, we add a zero to the remainder making it 660, and continue the process.

On to step 12:
When dividing 660 by 82, we get 8 with a remainder of 4.
Use 8 as the next digit of our solution. 
Result so far: 254.2804878
If we subtract 656 from 660, we get 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Let's proceed to step 13:
The number 82 fits into 40 0 times, leaving a remainder of 40.
Write down 0 as next digit of the result. 
Result so far: 254.2804878
Subtracting 0 from 40 leaves us with 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

After the division, we end up with 254.2804878 and a remainder of 4e-08.