727631 ÷ 21 
Let's see how many times 21 fits into 727631.

Let's proceed to step 1:
7 divided by 21 is 0 with a remainder of 7.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
The remainder is 7 after subtracting 0 from 7.
Take the next digit (2) from the dividend and append it to 7, then repeat: 72 / 21

Advancing to step 2:
72 divided by 21 is 3 with a remainder of 9.
Use 3 as the next digit of our solution. 
Result so far: 3.0
Subtract 63 from 72 to get 9.
Include the next digit (7) from the dividend after 9, then repeat: 97 / 21

Advancing to step 3:
When dividing 97 by 21, we get 4 with a remainder of 13.
The next digit of our result is 4. 
Result so far: 34.0
Subtract 84 from 97 to get 13.
Grab the next digit (6) from the dividend, add it to 13, then carry on: 136 / 21

Going ahead to step 4:
When dividing 136 by 21, we get 6 with a remainder of 10.
Use 6 as the next digit of our solution. 
Result so far: 346.0
If we take 126 away from 136, we end up with 10.
Append the next digit (3) from the dividend to 10 and continue with: 103 / 21

Advancing to step 5:
If we divide 103 by 21, we get 4 and a remainder of 19.
The next digit of our result is 4. 
Result so far: 3464.0
If we take 84 away from 103, we end up with 19.
Include the next digit (1) from the dividend after 19, then repeat: 191 / 21

Let's proceed to step 6:
The number 21 fits into 191 9 times, leaving a remainder of 2.
Write down 9 as next digit of the result. 
Result so far: 34649.0
The remainder is 2 after subtracting 189 from 191.
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 7:
21 goes into 20 0 times with a remainder of 20.
Record the quotient 0 as the next digit in the result. 
Result so far: 34649.0
Subtract 0 from 20 to 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.

Moving on to step 8:
If we divide 200 by 21, we get 9 and a remainder of 11.
Use 9 as the next digit of our solution. 
Result so far: 34649.09
The remainder is 11 after subtracting 189 from 200.
Since there are no more digits in the dividend, we add a zero to the remainder making it 110, and continue the process.

Step 9:
21 can be fit into 110 5 times, resulting in a remainder of 5.
The next digit of our result is 5. 
Result so far: 34649.095
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.

On to step 10:
If we divide 50 by 21, we get 2 and a remainder of 8.
The next digit of our result is 2. 
Result so far: 34649.0952
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 11:
21 can be fit into 80 3 times, resulting in a remainder of 17.
Use 3 as the next digit of our solution. 
Result so far: 34649.09523
If we subtract 63 from 80, we get 17.
Since there are no more digits in the dividend, we add a zero to the remainder making it 170, and continue the process.

Advancing to step 12:
170 divided by 21 is 8 with a remainder of 2.
Write down 8 as next digit of the result. 
Result so far: 34649.095238
If we subtract 168 from 170, we get 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Step 13:
21 goes into 20 0 times with a remainder of 20.
Write down 0 as next digit of the result. 
Result so far: 34649.095238
The remainder is 20 after subtracting 0 from 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Moving on to step 14:
200 divided by 21 is 9 with a remainder of 11.
Put 9 as the next digit of the answer. 
Result so far: 34649.09523809
The remainder is 11 after subtracting 189 from 200.
Since there are no more digits in the dividend, we add a zero to the remainder making it 110, and continue the process.

The final outcome is 34649.09523809, with a leftover of 1.1e-08.