56821645 ÷ 857 
We want to divide 56821645 by 857.

Going ahead to step 1:
857 goes into 5 0 times with a remainder of 5.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 5, we end up with 5.
Fetch the next digit (6) from the dividend, attach it to 5 and continue: 56 / 857

On to step 2:
When dividing 56 by 857, we get 0 with a remainder of 56.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 56 to get 56.
Fetch the next digit (8) from the dividend, attach it to 56 and continue: 568 / 857

Let's proceed to step 3:
If we divide 568 by 857, we get 0 and a remainder of 568.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 568 after subtracting 0 from 568.
Bring next digit (2) of the dividend behind the 568 and repeat the process: 5682 / 857

Going ahead to step 4:
857 can be fit into 5682 6 times, resulting in a remainder of 540.
Use 6 as the next digit of our solution. 
Result so far: 6.0
Subtracting 5142 from 5682 leaves us with 540.
Grab the next digit (1) from the dividend, add it to 540, then carry on: 5401 / 857

Advancing to step 5:
The number 857 fits into 5401 6 times, leaving a remainder of 259.
Use 6 as the next digit of our solution. 
Result so far: 66.0
Subtract 5142 from 5401 to get 259.
Include the next digit (6) from the dividend after 259, then repeat: 2596 / 857

Going ahead to step 6:
857 can be fit into 2596 3 times, resulting in a remainder of 25.
The number 3 becomes the next digit in our result. 
Result so far: 663.0
If we take 2571 away from 2596, we end up with 25.
Bring next digit (4) of the dividend behind the 25 and repeat the process: 254 / 857

On to step 7:
857 goes into 254 0 times with a remainder of 254.
Use 0 as the next digit of our solution. 
Result so far: 6630.0
If we take 0 away from 254, we end up with 254.
Append the next digit (5) from the dividend to 254 and continue with: 2545 / 857

Going ahead to step 8:
2545 divided by 857 is 2 with a remainder of 831.
Put 2 as the next digit of the answer. 
Result so far: 66302.0
Deduct 1714 from 2545 and we're left with 831.
Since there are no more digits in the dividend, we add a zero to the remainder making it 8310, and continue the process.

Moving on to step 9:
8310 divided by 857 is 9 with a remainder of 597.
The next digit of our result is 9. 
Result so far: 66302.9
Subtracting 7713 from 8310 leaves us with 597.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5970, and continue the process.

On to step 10:
5970 divided by 857 is 6 with a remainder of 828.
The next digit of our result is 6. 
Result so far: 66302.96
If we subtract 5142 from 5970, we get 828.
Since there are no more digits in the dividend, we add a zero to the remainder making it 8280, and continue the process.

On to step 11:
857 goes into 8280 9 times with a remainder of 567.
Put 9 as the next digit of the answer. 
Result so far: 66302.969
If we take 7713 away from 8280, we end up with 567.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5670, and continue the process.

Going ahead to step 12:
When dividing 5670 by 857, we get 6 with a remainder of 528.
Put 6 as the next digit of the answer. 
Result so far: 66302.9696
Deduct 5142 from 5670 and we're left with 528.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5280, and continue the process.

Let's proceed to step 13:
The number 857 fits into 5280 6 times, leaving a remainder of 138.
Use 6 as the next digit of our solution. 
Result so far: 66302.96966
Subtract 5142 from 5280 to get 138.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1380, and continue the process.

The final result is 66302.96966 with a remainder of 0.000138.