We're dividing 12386384 by 821 
Our goal is to divide 12386384 by 821.

On to step 1:
821 goes into 1 0 times with a remainder of 1.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 1 and we're left with 1.
Fetch the next digit (2) from the dividend, attach it to 1 and continue: 12 / 821

Let's proceed to step 2:
821 can be fit into 12 0 times, resulting in a remainder of 12.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 12 to get 12.
Grab the next digit (3) from the dividend, add it to 12, then carry on: 123 / 821

On to step 3:
When dividing 123 by 821, we get 0 with a remainder of 123.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 123 and we're left with 123.
Bring next digit (8) of the dividend behind the 123 and repeat the process: 1238 / 821

Going ahead to step 4:
821 goes into 1238 1 times with a remainder of 417.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
If we take 821 away from 1238, we end up with 417.
Bring next digit (6) of the dividend behind the 417 and repeat the process: 4176 / 821

Step 5:
The number 821 fits into 4176 5 times, leaving a remainder of 71.
Put 5 as the next digit of the answer. 
Result so far: 15.0
Deduct 4105 from 4176 and we're left with 71.
Append the next digit (3) from the dividend to 71 and continue with: 713 / 821

Step 6:
713 divided by 821 is 0 with a remainder of 713.
Use 0 as the next digit of our solution. 
Result so far: 150.0
If we subtract 0 from 713, we get 713.
Append the next digit (8) from the dividend to 713 and continue with: 7138 / 821

Advancing to step 7:
821 can be fit into 7138 8 times, resulting in a remainder of 570.
Use 8 as the next digit of our solution. 
Result so far: 1508.0
Subtract 6568 from 7138 to get 570.
Grab the next digit (4) from the dividend, add it to 570, then carry on: 5704 / 821

Going ahead to step 8:
821 can be fit into 5704 6 times, resulting in a remainder of 778.
Record the quotient 6 as the next digit in the result. 
Result so far: 15086.0
If we take 4926 away from 5704, we end up 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.

Let's proceed to step 9:
821 can be fit into 7780 9 times, resulting in a remainder of 391.
The next digit of our result is 9. 
Result so far: 15086.9
Subtracting 7389 from 7780 leaves us with 391.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3910, and continue the process.

Advancing to step 10:
The number 821 fits into 3910 4 times, leaving a remainder of 626.
Write down 4 as next digit of the result. 
Result so far: 15086.94
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.

Going ahead to step 11:
821 can be fit into 6260 7 times, resulting in a remainder of 513.
The number 7 becomes the next digit in our result. 
Result so far: 15086.947
If we subtract 5747 from 6260, we 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.

On to step 12:
When dividing 5130 by 821, we get 6 with a remainder of 204.
Write down 6 as next digit of the result. 
Result so far: 15086.9476
If we subtract 4926 from 5130, we get 204.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2040, and continue the process.

Advancing to step 13:
When dividing 2040 by 821, we get 2 with a remainder of 398.
The next digit of our result is 2. 
Result so far: 15086.94762
If we subtract 1642 from 2040, we get 398.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3980, and continue the process.

Moving on to step 14:
821 goes into 3980 4 times with a remainder of 696.
The number 4 becomes the next digit in our result. 
Result so far: 15086.947624
If we take 3284 away from 3980, we end up with 696.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6960, and continue the process.

Let's proceed to step 15:
821 can be fit into 6960 8 times, resulting in a remainder of 392.
Write down 8 as next digit of the result. 
Result so far: 15086.9476248
The remainder is 392 after subtracting 6568 from 6960.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3920, and continue the process.

Going ahead to step 16:
821 goes into 3920 4 times with a remainder of 636.
The number 4 becomes the next digit in our result. 
Result so far: 15086.94762484
The remainder is 636 after subtracting 3284 from 3920.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6360, and continue the process.

The final result is 15086.94762484 with a remainder of 6.36e-07.