We divide 669256 by 21
Our goal is to divide 669256 by 21.

Going ahead to step 1:
If we divide 6 by 21, we get 0 and a remainder of 6.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 6 leaves us with 6.
Take the next digit (6) from the dividend and append it to 6, then repeat: 66 / 21

Let's proceed to step 2:
21 can be fit into 66 3 times, resulting in a remainder of 3.
Record the quotient 3 as the next digit in the result. 
Result so far: 3.0
Deduct 63 from 66 and we're left with 3.
Bring next digit (9) of the dividend behind the 3 and repeat the process: 39 / 21

Moving on to step 3:
21 goes into 39 1 times with a remainder of 18.
The next digit of our result is 1. 
Result so far: 31.0
If we subtract 21 from 39, we get 18.
Bring next digit (2) of the dividend behind the 18 and repeat the process: 182 / 21

Let's proceed to step 4:
21 goes into 182 8 times with a remainder of 14.
Put 8 as the next digit of the answer. 
Result so far: 318.0
If we take 168 away from 182, we end up with 14.
Fetch the next digit (5) from the dividend, attach it to 14 and continue: 145 / 21

Step 5:
If we divide 145 by 21, we get 6 and a remainder of 19.
Put 6 as the next digit of the answer. 
Result so far: 3186.0
The remainder is 19 after subtracting 126 from 145.
Append the next digit (6) from the dividend to 19 and continue with: 196 / 21

Advancing to step 6:
If we divide 196 by 21, we get 9 and a remainder of 7.
Record the quotient 9 as the next digit in the result. 
Result so far: 31869.0
The remainder is 7 after subtracting 189 from 196.
Since there are no more digits in the dividend, we add a zero to the remainder making it 70, and continue the process.

Moving on to step 7:
The number 21 fits into 70 3 times, leaving a remainder of 7.
The next digit of our result is 3. 
Result so far: 31869.3
If we subtract 63 from 70, we get 7.
Since there are no more digits in the dividend, we add a zero to the remainder making it 70, and continue the process.

On to step 8:
21 can be fit into 70 3 times, resulting in a remainder of 7.
Put 3 as the next digit of the answer. 
Result so far: 31869.33
Deduct 63 from 70 and we're left with 7.
Since there are no more digits in the dividend, we add a zero to the remainder making it 70, and continue the process.

In conclusion, the division gives 31869.33 with a balance of 0.007.