792729 ÷ 21 
Let's see how many times 21 fits into 792729.

Step 1:
If we divide 7 by 21, we get 0 and a remainder of 7.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we take 0 away from 7, we end up with 7.
Bring next digit (9) of the dividend behind the 7 and repeat the process: 79 / 21

Step 2:
21 goes into 79 3 times with a remainder of 16.
Write down 3 as next digit of the result. 
Result so far: 3.0
Deduct 63 from 79 and we're left with 16.
Fetch the next digit (2) from the dividend, attach it to 16 and continue: 162 / 21

On to step 3:
21 goes into 162 7 times with a remainder of 15.
The number 7 becomes the next digit in our result. 
Result so far: 37.0
Subtracting 147 from 162 leaves us with 15.
Fetch the next digit (7) from the dividend, attach it to 15 and continue: 157 / 21

Step 4:
21 goes into 157 7 times with a remainder of 10.
Use 7 as the next digit of our solution. 
Result so far: 377.0
Subtracting 147 from 157 leaves us with 10.
Fetch the next digit (2) from the dividend, attach it to 10 and continue: 102 / 21

Advancing to step 5:
If we divide 102 by 21, we get 4 and a remainder of 18.
Record the quotient 4 as the next digit in the result. 
Result so far: 3774.0
Subtract 84 from 102 to get 18.
Include the next digit (9) from the dividend after 18, then repeat: 189 / 21

Step 6:
The number 21 fits into 189 9 times, leaving a remainder of 0.
The next digit of our result is 9. 
Result so far: 37749.0
If we subtract 189 from 189, we get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Moving on to step 7:
21 goes into 0 0 times with a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 37749.0
Deduct 0 from 0 and we're left with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Going ahead to step 8:
21 can be fit into 0 0 times, resulting in a remainder of 0.
Write down 0 as next digit of the result. 
Result so far: 37749.0
Subtract 0 from 0 to get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

The final outcome is 37749.0, with a leftover of 0.0.