We're dividing 629291 by 21 
Our goal is to divide 629291 by 21.

On to step 1:
When dividing 6 by 21, we get 0 with a remainder of 6.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 6 to get 6.
Fetch the next digit (2) from the dividend, attach it to 6 and continue: 62 / 21

On to step 2:
62 divided by 21 is 2 with a remainder of 20.
The number 2 becomes the next digit in our result. 
Result so far: 2.0
Deduct 42 from 62 and we're left with 20.
Fetch the next digit (9) from the dividend, attach it to 20 and continue: 209 / 21

Going ahead to step 3:
When dividing 209 by 21, we get 9 with a remainder of 20.
Put 9 as the next digit of the answer. 
Result so far: 29.0
Subtracting 189 from 209 leaves us with 20.
Bring next digit (2) of the dividend behind the 20 and repeat the process: 202 / 21

Going ahead to step 4:
The number 21 fits into 202 9 times, leaving a remainder of 13.
Use 9 as the next digit of our solution. 
Result so far: 299.0
If we take 189 away from 202, we end up with 13.
Take the next digit (9) from the dividend and append it to 13, then repeat: 139 / 21

Moving on to step 5:
If we divide 139 by 21, we get 6 and a remainder of 13.
The number 6 becomes the next digit in our result. 
Result so far: 2996.0
Subtract 126 from 139 to get 13.
Include the next digit (1) from the dividend after 13, then repeat: 131 / 21

Step 6:
21 goes into 131 6 times with a remainder of 5.
Use 6 as the next digit of our solution. 
Result so far: 29966.0
If we subtract 126 from 131, we get 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

On to step 7:
21 goes into 50 2 times with a remainder of 8.
Put 2 as the next digit of the answer. 
Result so far: 29966.2
The remainder is 8 after subtracting 42 from 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Step 8:
If we divide 80 by 21, we get 3 and a remainder of 17.
The number 3 becomes the next digit in our result. 
Result so far: 29966.23
If we take 63 away from 80, we end up with 17.
Since there are no more digits in the dividend, we add a zero to the remainder making it 170, and continue the process.

Moving on to step 9:
170 divided by 21 is 8 with a remainder of 2.
Put 8 as the next digit of the answer. 
Result so far: 29966.238
If we take 168 away from 170, we end up with 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Advancing to step 10:
The number 21 fits into 20 0 times, leaving a remainder of 20.
Put 0 as the next digit of the answer. 
Result so far: 29966.238
If we subtract 0 from 20, we get 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Advancing to step 11:
The number 21 fits into 200 9 times, leaving a remainder of 11.
Use 9 as the next digit of our solution. 
Result so far: 29966.23809
If we take 189 away from 200, we end up with 11.
Since there are no more digits in the dividend, we add a zero to the remainder making it 110, and continue the process.

Let's proceed to step 12:
The number 21 fits into 110 5 times, leaving a remainder of 5.
Put 5 as the next digit of the answer. 
Result so far: 29966.238095
If we take 105 away from 110, we end up with 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Going ahead to step 13:
21 goes into 50 2 times with a remainder of 8.
The number 2 becomes the next digit in our result. 
Result so far: 29966.2380952
Subtract 42 from 50 to get 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Advancing to step 14:
21 can be fit into 80 3 times, resulting in a remainder of 17.
The number 3 becomes the next digit in our result. 
Result so far: 29966.23809523
Deduct 63 from 80 and we're left with 17.
Since there are no more digits in the dividend, we add a zero to the remainder making it 170, and continue the process.

The quotient of the division is 29966.23809523, and the remainder is 1.7e-08.