We look at the division of 587604 by 21 
Our goal is to divide 587604 by 21.

Moving on to step 1:
21 can be fit into 5 0 times, resulting in a remainder of 5.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 5 to get 5.
Grab the next digit (8) from the dividend, add it to 5, then carry on: 58 / 21

Moving on to step 2:
21 goes into 58 2 times with a remainder of 16.
Put 2 as the next digit of the answer. 
Result so far: 2.0
If we take 42 away from 58, we end up with 16.
Grab the next digit (7) from the dividend, add it to 16, then carry on: 167 / 21

Moving on to step 3:
The number 21 fits into 167 7 times, leaving a remainder of 20.
Use 7 as the next digit of our solution. 
Result so far: 27.0
Subtracting 147 from 167 leaves us with 20.
Grab the next digit (6) from the dividend, add it to 20, then carry on: 206 / 21

Let's proceed to step 4:
206 divided by 21 is 9 with a remainder of 17.
Record the quotient 9 as the next digit in the result. 
Result so far: 279.0
Subtracting 189 from 206 leaves us with 17.
Fetch the next digit (0) from the dividend, attach it to 17 and continue: 170 / 21

Advancing to step 5:
170 divided by 21 is 8 with a remainder of 2.
The next digit of our result is 8. 
Result so far: 2798.0
If we subtract 168 from 170, we get 2.
Fetch the next digit (4) from the dividend, attach it to 2 and continue: 24 / 21

Going ahead to step 6:
21 goes into 24 1 times with a remainder of 3.
Write down 1 as next digit of the result. 
Result so far: 27981.0
If we take 21 away from 24, 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.

Step 7:
21 goes into 30 1 times with a remainder of 9.
Use 1 as the next digit of our solution. 
Result so far: 27981.1
If we take 21 away from 30, we end up 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.

Moving on to step 8:
When dividing 90 by 21, we get 4 with a remainder of 6.
The next digit of our result is 4. 
Result so far: 27981.14
The remainder is 6 after subtracting 84 from 90.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

On to step 9:
The number 21 fits into 60 2 times, leaving a remainder of 18.
Use 2 as the next digit of our solution. 
Result so far: 27981.142
Deduct 42 from 60 and we're left 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.

Let's proceed to step 10:
If we divide 180 by 21, we get 8 and a remainder of 12.
Put 8 as the next digit of the answer. 
Result so far: 27981.1428
If we take 168 away from 180, we end up 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.

Let's proceed to step 11:
21 goes into 120 5 times with a remainder of 15.
Write down 5 as next digit of the result. 
Result so far: 27981.14285
The remainder is 15 after subtracting 105 from 120.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

Step 12:
21 can be fit into 150 7 times, resulting in a remainder of 3.
The number 7 becomes the next digit in our result. 
Result so far: 27981.142857
The remainder is 3 after subtracting 147 from 150.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

On to step 13:
If we divide 30 by 21, we get 1 and a remainder of 9.
Put 1 as the next digit of the answer. 
Result so far: 27981.1428571
The remainder is 9 after subtracting 21 from 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 90, and continue the process.

Advancing to step 14:
When dividing 90 by 21, we get 4 with a remainder of 6.
Put 4 as the next digit of the answer. 
Result so far: 27981.14285714
The remainder is 6 after subtracting 84 from 90.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

In conclusion, the division gives 27981.14285714 with a balance of 6e-09.