We're dividing 566886 by 21 
Let's see how many times 21 fits into 566886.

Let's proceed to step 1:
5 divided by 21 is 0 with a remainder of 5.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 5, we get 5.
Take the next digit (6) from the dividend and append it to 5, then repeat: 56 / 21

Step 2:
56 divided by 21 is 2 with a remainder of 14.
The next digit of our result is 2. 
Result so far: 2.0
Subtract 42 from 56 to get 14.
Bring next digit (6) of the dividend behind the 14 and repeat the process: 146 / 21

Let's proceed to step 3:
21 goes into 146 6 times with a remainder of 20.
The number 6 becomes the next digit in our result. 
Result so far: 26.0
If we subtract 126 from 146, we get 20.
Grab the next digit (8) from the dividend, add it to 20, then carry on: 208 / 21

Going ahead to step 4:
21 can be fit into 208 9 times, resulting in a remainder of 19.
Write down 9 as next digit of the result. 
Result so far: 269.0
Subtract 189 from 208 to get 19.
Fetch the next digit (8) from the dividend, attach it to 19 and continue: 198 / 21

On to step 5:
198 divided by 21 is 9 with a remainder of 9.
The next digit of our result is 9. 
Result so far: 2699.0
The remainder is 9 after subtracting 189 from 198.
Fetch the next digit (6) from the dividend, attach it to 9 and continue: 96 / 21

Going ahead to step 6:
If we divide 96 by 21, we get 4 and a remainder of 12.
Record the quotient 4 as the next digit in the result. 
Result so far: 26994.0
If we subtract 84 from 96, we get 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

Going ahead to step 7:
When dividing 120 by 21, we get 5 with a remainder of 15.
Put 5 as the next digit of the answer. 
Result so far: 26994.5
If we subtract 105 from 120, we get 15.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

Advancing to step 8:
21 goes into 150 7 times with a remainder of 3.
Write down 7 as next digit of the result. 
Result so far: 26994.57
Subtract 147 from 150 to get 3.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

Step 9:
30 divided by 21 is 1 with a remainder of 9.
Record the quotient 1 as the next digit in the result. 
Result so far: 26994.571
Subtracting 21 from 30 leaves us with 9.
Since there are no more digits in the dividend, we add a zero to the remainder making it 90, and continue the process.

Going ahead to step 10:
When dividing 90 by 21, we get 4 with a remainder of 6.
Use 4 as the next digit of our solution. 
Result so far: 26994.5714
If we subtract 84 from 90, we get 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Moving on to step 11:
60 divided by 21 is 2 with a remainder of 18.
The number 2 becomes the next digit in our result. 
Result so far: 26994.57142
If we take 42 away from 60, we end up with 18.
Since there are no more digits in the dividend, we add a zero to the remainder making it 180, and continue the process.

Going ahead to step 12:
21 goes into 180 8 times with a remainder of 12.
Use 8 as the next digit of our solution. 
Result so far: 26994.571428
Deduct 168 from 180 and we're left with 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

On to step 13:
When dividing 120 by 21, we get 5 with a remainder of 15.
The number 5 becomes the next digit in our result. 
Result so far: 26994.5714285
If we take 105 away from 120, we end up with 15.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

Going ahead to step 14:
When dividing 150 by 21, we get 7 with a remainder of 3.
The number 7 becomes the next digit in our result. 
Result so far: 26994.57142857
If we take 147 away from 150, we end up with 3.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

After the division, we end up with 26994.57142857 and a remainder of 3e-09.