We're dividing 16648856 by 821 
We want to figure out the number of times 16648856 can be divided by 821.

Step 1:
The number 821 fits into 1 0 times, leaving a remainder of 1.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 1, we end up with 1.
Include the next digit (6) from the dividend after 1, then repeat: 16 / 821

Going ahead to step 2:
When dividing 16 by 821, we get 0 with a remainder of 16.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 16 after subtracting 0 from 16.
Bring next digit (6) of the dividend behind the 16 and repeat the process: 166 / 821

On to step 3:
821 goes into 166 0 times with a remainder of 166.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 166 leaves us with 166.
Fetch the next digit (4) from the dividend, attach it to 166 and continue: 1664 / 821

Let's proceed to step 4:
1664 divided by 821 is 2 with a remainder of 22.
The number 2 becomes the next digit in our result. 
Result so far: 2.0
If we subtract 1642 from 1664, we get 22.
Grab the next digit (8) from the dividend, add it to 22, then carry on: 228 / 821

Advancing to step 5:
The number 821 fits into 228 0 times, leaving a remainder of 228.
The number 0 becomes the next digit in our result. 
Result so far: 20.0
Subtracting 0 from 228 leaves us with 228.
Fetch the next digit (8) from the dividend, attach it to 228 and continue: 2288 / 821

On to step 6:
The number 821 fits into 2288 2 times, leaving a remainder of 646.
The number 2 becomes the next digit in our result. 
Result so far: 202.0
Deduct 1642 from 2288 and we're left with 646.
Bring next digit (5) of the dividend behind the 646 and repeat the process: 6465 / 821

On to step 7:
821 can be fit into 6465 7 times, resulting in a remainder of 718.
Use 7 as the next digit of our solution. 
Result so far: 2027.0
Subtracting 5747 from 6465 leaves us with 718.
Include the next digit (6) from the dividend after 718, then repeat: 7186 / 821

Let's proceed to step 8:
7186 divided by 821 is 8 with a remainder of 618.
Put 8 as the next digit of the answer. 
Result so far: 20278.0
The remainder is 618 after subtracting 6568 from 7186.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6180, and continue the process.

Advancing to step 9:
821 can be fit into 6180 7 times, resulting in a remainder of 433.
Put 7 as the next digit of the answer. 
Result so far: 20278.7
If we take 5747 away from 6180, we end up with 433.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4330, and continue the process.

Advancing to step 10:
If we divide 4330 by 821, we get 5 and a remainder of 225.
The number 5 becomes the next digit in our result. 
Result so far: 20278.75
If we take 4105 away from 4330, we end up with 225.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2250, and continue the process.

On to step 11:
The number 821 fits into 2250 2 times, leaving a remainder of 608.
Write down 2 as next digit of the result. 
Result so far: 20278.752
Subtract 1642 from 2250 to get 608.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6080, and continue the process.

Going ahead to step 12:
821 can be fit into 6080 7 times, resulting in a remainder of 333.
Record the quotient 7 as the next digit in the result. 
Result so far: 20278.7527
Subtracting 5747 from 6080 leaves us with 333.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3330, and continue the process.

Step 13:
If we divide 3330 by 821, we get 4 and a remainder of 46.
The next digit of our result is 4. 
Result so far: 20278.75274
Subtract 3284 from 3330 to get 46.
Since there are no more digits in the dividend, we add a zero to the remainder making it 460, and continue the process.

Going ahead to step 14:
821 can be fit into 460 0 times, resulting in a remainder of 460.
Write down 0 as next digit of the result. 
Result so far: 20278.75274
Subtract 0 from 460 to get 460.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4600, and continue the process.

Moving on to step 15:
The number 821 fits into 4600 5 times, leaving a remainder of 495.
The next digit of our result is 5. 
Result so far: 20278.7527405
Subtract 4105 from 4600 to get 495.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4950, and continue the process.

Step 16:
If we divide 4950 by 821, we get 6 and a remainder of 24.
Record the quotient 6 as the next digit in the result. 
Result so far: 20278.75274056
If we subtract 4926 from 4950, we get 24.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

In conclusion, the division gives 20278.75274056 with a balance of 2.4e-08.