58659 divided by 21 
We want to divide 58659 by 21.

Step 1:
21 goes into 5 0 times 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.
Bring next digit (8) of the dividend behind the 5 and repeat the process: 58 / 21

Advancing to step 2:
21 goes into 58 2 times with a remainder of 16.
Use 2 as the next digit of our solution. 
Result so far: 2.0
Subtract 42 from 58 to get 16.
Take the next digit (6) from the dividend and append it to 16, then repeat: 166 / 21

On to step 3:
166 divided by 21 is 7 with a remainder of 19.
Use 7 as the next digit of our solution. 
Result so far: 27.0
The remainder is 19 after subtracting 147 from 166.
Take the next digit (5) from the dividend and append it to 19, then repeat: 195 / 21

Going ahead to step 4:
195 divided by 21 is 9 with a remainder of 6.
Use 9 as the next digit of our solution. 
Result so far: 279.0
Subtract 189 from 195 to get 6.
Include the next digit (9) from the dividend after 6, then repeat: 69 / 21

Moving on to step 5:
69 divided by 21 is 3 with a remainder of 6.
Put 3 as the next digit of the answer. 
Result so far: 2793.0
Subtracting 63 from 69 leaves us with 6.
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 6:
21 goes into 60 2 times with a remainder of 18.
Write down 2 as next digit of the result. 
Result so far: 2793.2
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.

On to step 7:
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: 2793.28
Subtract 168 from 180 to 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.

Let's proceed to step 8:
If we divide 120 by 21, we get 5 and a remainder of 15.
The next digit of our result is 5. 
Result so far: 2793.285
Subtract 105 from 120 to 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 9:
If we divide 150 by 21, we get 7 and a remainder of 3.
Put 7 as the next digit of the answer. 
Result so far: 2793.2857
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.

Let's proceed to step 10:
21 goes into 30 1 times with a remainder of 9.
Write down 1 as next digit of the result. 
Result so far: 2793.28571
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 11:
21 goes into 90 4 times with a remainder of 6.
Write down 4 as next digit of the result. 
Result so far: 2793.285714
Subtract 84 from 90 to 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.

Step 12:
When dividing 60 by 21, we get 2 with a remainder of 18.
Write down 2 as next digit of the result. 
Result so far: 2793.2857142
If we subtract 42 from 60, we get 18.
Since there are no more digits in the dividend, we add a zero to the remainder making it 180, and continue the process.

On to step 13:
21 goes into 180 8 times with a remainder of 12.
The next digit of our result is 8. 
Result so far: 2793.28571428
If we subtract 168 from 180, 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.

Our division results in 2793.28571428 with a remaining 1.2e-08.