We're dividing 686971 by 21 
Let's see how many times 21 fits into 686971.

Moving on to step 1:
21 goes into 6 0 times with a remainder of 6.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 6, we get 6.
Fetch the next digit (8) from the dividend, attach it to 6 and continue: 68 / 21

Going ahead to step 2:
21 goes into 68 3 times with a remainder of 5.
Put 3 as the next digit of the answer. 
Result so far: 3.0
If we subtract 63 from 68, we get 5.
Fetch the next digit (6) from the dividend, attach it to 5 and continue: 56 / 21

Let's proceed to step 3:
The number 21 fits into 56 2 times, leaving a remainder of 14.
Record the quotient 2 as the next digit in the result. 
Result so far: 32.0
If we take 42 away from 56, we end up with 14.
Grab the next digit (9) from the dividend, add it to 14, then carry on: 149 / 21

Moving on to step 4:
149 divided by 21 is 7 with a remainder of 2.
The next digit of our result is 7. 
Result so far: 327.0
Subtracting 147 from 149 leaves us with 2.
Append the next digit (7) from the dividend to 2 and continue with: 27 / 21

On to step 5:
When dividing 27 by 21, we get 1 with a remainder of 6.
The next digit of our result is 1. 
Result so far: 3271.0
If we subtract 21 from 27, we get 6.
Grab the next digit (1) from the dividend, add it to 6, then carry on: 61 / 21

On to step 6:
If we divide 61 by 21, we get 2 and a remainder of 19.
Put 2 as the next digit of the answer. 
Result so far: 32712.0
The remainder is 19 after subtracting 42 from 61.
Since there are no more digits in the dividend, we add a zero to the remainder making it 190, and continue the process.

Moving on to step 7:
If we divide 190 by 21, we get 9 and a remainder of 1.
Write down 9 as next digit of the result. 
Result so far: 32712.9
Deduct 189 from 190 and we're left 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.

Going ahead to step 8:
21 goes into 10 0 times with a remainder of 10.
The next digit of our result is 0. 
Result so far: 32712.9
Subtract 0 from 10 to get 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Going ahead to step 9:
When dividing 100 by 21, we get 4 with a remainder of 16.
The next digit of our result is 4. 
Result so far: 32712.904
If we take 84 away from 100, we end up 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.

Step 10:
21 goes into 160 7 times with a remainder of 13.
The next digit of our result is 7. 
Result so far: 32712.9047
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 11:
21 goes into 130 6 times with a remainder of 4.
Record the quotient 6 as the next digit in the result. 
Result so far: 32712.90476
Subtract 126 from 130 to 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.

On to step 12:
The number 21 fits into 40 1 times, leaving a remainder of 19.
Use 1 as the next digit of our solution. 
Result so far: 32712.904761
If we take 21 away from 40, we end up with 19.
Since there are no more digits in the dividend, we add a zero to the remainder making it 190, and continue the process.

Step 13:
The number 21 fits into 190 9 times, leaving a remainder of 1.
The next digit of our result is 9. 
Result so far: 32712.9047619
The remainder is 1 after subtracting 189 from 190.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

Advancing to step 14:
When dividing 10 by 21, we get 0 with a remainder of 10.
Record the quotient 0 as the next digit in the result. 
Result so far: 32712.9047619
The remainder is 10 after subtracting 0 from 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

In conclusion, the division gives 32712.9047619 with a balance of 1e-08.