We divide 629634 by 21
We want to divide 629634 by 21.

Let's proceed to step 1:
When dividing 6 by 21, we get 0 with 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.
Fetch the next digit (2) from the dividend, attach it to 6 and continue: 62 / 21

On to step 2:
When dividing 62 by 21, we get 2 with a remainder of 20.
Put 2 as the next digit of the answer. 
Result so far: 2.0
The remainder is 20 after subtracting 42 from 62.
Grab the next digit (9) from the dividend, add it to 20, then carry on: 209 / 21

Going ahead to step 3:
21 can be fit into 209 9 times, resulting in a remainder of 20.
The next digit of our result is 9. 
Result so far: 29.0
The remainder is 20 after subtracting 189 from 209.
Fetch the next digit (6) from the dividend, attach it to 20 and continue: 206 / 21

Advancing to step 4:
21 goes into 206 9 times with a remainder of 17.
The number 9 becomes the next digit in our result. 
Result so far: 299.0
Subtract 189 from 206 to get 17.
Grab the next digit (3) from the dividend, add it to 17, then carry on: 173 / 21

Moving on to step 5:
The number 21 fits into 173 8 times, leaving a remainder of 5.
Record the quotient 8 as the next digit in the result. 
Result so far: 2998.0
Subtract 168 from 173 to get 5.
Append the next digit (4) from the dividend to 5 and continue with: 54 / 21

On to step 6:
21 can be fit into 54 2 times, resulting in a remainder of 12.
The number 2 becomes the next digit in our result. 
Result so far: 29982.0
If we subtract 42 from 54, 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.

On to step 7:
21 goes into 120 5 times with a remainder of 15.
The next digit of our result is 5. 
Result so far: 29982.5
Deduct 105 from 120 and we're left with 15.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

Let's proceed to step 8:
The number 21 fits into 150 7 times, leaving a remainder of 3.
Use 7 as the next digit of our solution. 
Result so far: 29982.57
If we subtract 147 from 150, we get 3.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

Advancing to step 9:
21 can be fit into 30 1 times, resulting in a remainder of 9.
Use 1 as the next digit of our solution. 
Result so far: 29982.571
Subtract 21 from 30 to get 9.
Since there are no more digits in the dividend, we add a zero to the remainder making it 90, and continue the process.

Going ahead to step 10:
21 goes into 90 4 times with a remainder of 6.
Write down 4 as next digit of the result. 
Result so far: 29982.5714
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 11:
21 can be fit into 60 2 times, resulting in a remainder of 18.
Put 2 as the next digit of the answer. 
Result so far: 29982.57142
The remainder is 18 after subtracting 42 from 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 180, and continue the process.

Advancing to step 12:
21 goes into 180 8 times with a remainder of 12.
The number 8 becomes the next digit in our result. 
Result so far: 29982.571428
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 13:
If we divide 120 by 21, we get 5 and a remainder of 15.
Write down 5 as next digit of the result. 
Result so far: 29982.5714285
If we subtract 105 from 120, we 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.

Let's proceed to step 14:
The number 21 fits into 150 7 times, leaving a remainder of 3.
Write down 7 as next digit of the result. 
Result so far: 29982.57142857
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.

The final outcome is 29982.57142857, with a leftover of 3e-09.