66003057 divided by 821 
We want to divide 66003057 by 821.

Going ahead to step 1:
6 divided by 821 is 0 with a remainder of 6.
The next digit of our result is 0. 
Result so far: 0.0
Subtracting 0 from 6 leaves us with 6.
Bring next digit (6) of the dividend behind the 6 and repeat the process: 66 / 821

Let's proceed to step 2:
If we divide 66 by 821, we get 0 and a remainder of 66.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 66 and we're left with 66.
Include the next digit (0) from the dividend after 66, then repeat: 660 / 821

On to step 3:
821 goes into 660 0 times with a remainder of 660.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 660 and we're left with 660.
Append the next digit (0) from the dividend to 660 and continue with: 6600 / 821

Step 4:
821 can be fit into 6600 8 times, resulting in a remainder of 32.
Use 8 as the next digit of our solution. 
Result so far: 8.0
Subtract 6568 from 6600 to get 32.
Grab the next digit (3) from the dividend, add it to 32, then carry on: 323 / 821

Moving on to step 5:
323 divided by 821 is 0 with a remainder of 323.
The next digit of our result is 0. 
Result so far: 80.0
Deduct 0 from 323 and we're left with 323.
Bring next digit (0) of the dividend behind the 323 and repeat the process: 3230 / 821

Step 6:
When dividing 3230 by 821, we get 3 with a remainder of 767.
Use 3 as the next digit of our solution. 
Result so far: 803.0
Subtracting 2463 from 3230 leaves us with 767.
Grab the next digit (5) from the dividend, add it to 767, then carry on: 7675 / 821

Advancing to step 7:
821 goes into 7675 9 times with a remainder of 286.
The number 9 becomes the next digit in our result. 
Result so far: 8039.0
Subtract 7389 from 7675 to get 286.
Fetch the next digit (7) from the dividend, attach it to 286 and continue: 2867 / 821

Advancing to step 8:
821 goes into 2867 3 times with a remainder of 404.
The number 3 becomes the next digit in our result. 
Result so far: 80393.0
If we take 2463 away from 2867, we end up with 404.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4040, and continue the process.

Step 9:
821 can be fit into 4040 4 times, resulting in a remainder of 756.
The number 4 becomes the next digit in our result. 
Result so far: 80393.4
Subtract 3284 from 4040 to get 756.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7560, and continue the process.

Step 10:
821 goes into 7560 9 times with a remainder of 171.
The next digit of our result is 9. 
Result so far: 80393.49
Deduct 7389 from 7560 and we're left with 171.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1710, and continue the process.

Advancing to step 11:
821 can be fit into 1710 2 times, resulting in a remainder of 68.
Write down 2 as next digit of the result. 
Result so far: 80393.492
Subtract 1642 from 1710 to get 68.
Since there are no more digits in the dividend, we add a zero to the remainder making it 680, and continue the process.

Moving on to step 12:
680 divided by 821 is 0 with a remainder of 680.
Use 0 as the next digit of our solution. 
Result so far: 80393.492
Subtract 0 from 680 to get 680.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6800, and continue the process.

Step 13:
The number 821 fits into 6800 8 times, leaving a remainder of 232.
The number 8 becomes the next digit in our result. 
Result so far: 80393.49208
Subtracting 6568 from 6800 leaves us with 232.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2320, and continue the process.

Moving on to step 14:
821 goes into 2320 2 times with a remainder of 678.
Write down 2 as next digit of the result. 
Result so far: 80393.492082
The remainder is 678 after subtracting 1642 from 2320.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6780, and continue the process.

Let's proceed to step 15:
When dividing 6780 by 821, we get 8 with a remainder of 212.
Put 8 as the next digit of the answer. 
Result so far: 80393.4920828
If we take 6568 away from 6780, we end up with 212.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2120, and continue the process.

Moving on to step 16:
The number 821 fits into 2120 2 times, leaving a remainder of 478.
The next digit of our result is 2. 
Result so far: 80393.49208282
Deduct 1642 from 2120 and we're left with 478.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4780, and continue the process.

The final outcome is 80393.49208282, with a leftover of 4.78e-07.