We look at the division of 559687 by 21 
Our goal is to divide 559687 by 21.

On to step 1:
When dividing 5 by 21, we get 0 with a remainder of 5.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 5 to get 5.
Take the next digit (5) from the dividend and append it to 5, then repeat: 55 / 21

On to step 2:
When dividing 55 by 21, we get 2 with a remainder of 13.
Use 2 as the next digit of our solution. 
Result so far: 2.0
Subtract 42 from 55 to get 13.
Fetch the next digit (9) from the dividend, attach it to 13 and continue: 139 / 21

On to step 3:
The number 21 fits into 139 6 times, leaving a remainder of 13.
Record the quotient 6 as the next digit in the result. 
Result so far: 26.0
The remainder is 13 after subtracting 126 from 139.
Fetch the next digit (6) from the dividend, attach it to 13 and continue: 136 / 21

Let's proceed to step 4:
When dividing 136 by 21, we get 6 with a remainder of 10.
Write down 6 as next digit of the result. 
Result so far: 266.0
Subtracting 126 from 136 leaves us with 10.
Take the next digit (8) from the dividend and append it to 10, then repeat: 108 / 21

Step 5:
21 can be fit into 108 5 times, resulting in a remainder of 3.
The next digit of our result is 5. 
Result so far: 2665.0
Subtracting 105 from 108 leaves us with 3.
Grab the next digit (7) from the dividend, add it to 3, then carry on: 37 / 21

On to step 6:
When dividing 37 by 21, we get 1 with a remainder of 16.
Put 1 as the next digit of the answer. 
Result so far: 26651.0
Deduct 21 from 37 and we're left with 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

Going ahead to step 7:
The number 21 fits into 160 7 times, leaving a remainder of 13.
The next digit of our result is 7. 
Result so far: 26651.7
If we take 147 away from 160, we end up with 13.
Since there are no more digits in the dividend, we add a zero to the remainder making it 130, and continue the process.

Going ahead to step 8:
21 can be fit into 130 6 times, resulting in a remainder of 4.
The next digit of our result is 6. 
Result so far: 26651.76
Deduct 126 from 130 and we're left with 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Moving on to step 9:
21 can be fit into 40 1 times, resulting in a remainder of 19.
Put 1 as the next digit of the answer. 
Result so far: 26651.761
The remainder is 19 after subtracting 21 from 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 190, and continue the process.

Step 10:
190 divided by 21 is 9 with a remainder of 1.
The next digit of our result is 9. 
Result so far: 26651.7619
If we take 189 away from 190, we end up with 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

Let's proceed to step 11:
If we divide 10 by 21, we get 0 and a remainder of 10.
The next digit of our result is 0. 
Result so far: 26651.7619
Subtracting 0 from 10 leaves us with 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Advancing to step 12:
21 goes into 100 4 times with a remainder of 16.
Write down 4 as next digit of the result. 
Result so far: 26651.761904
The remainder is 16 after subtracting 84 from 100.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

Let's proceed to step 13:
If we divide 160 by 21, we get 7 and a remainder of 13.
Record the quotient 7 as the next digit in the result. 
Result so far: 26651.7619047
Subtract 147 from 160 to get 13.
Since there are no more digits in the dividend, we add a zero to the remainder making it 130, and continue the process.

Going ahead to step 14:
The number 21 fits into 130 6 times, leaving a remainder of 4.
The next digit of our result is 6. 
Result so far: 26651.76190476
If we subtract 126 from 130, we get 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

In conclusion, the division gives 26651.76190476 with a balance of 4e-09.