29744260 ÷ 21 
We're looking to find how many times 21 goes into 29744260.

On to step 1:
21 goes into 2 0 times with a remainder of 2.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 2, we get 2.
Include the next digit (9) from the dividend after 2, then repeat: 29 / 21

Moving on to step 2:
The number 21 fits into 29 1 times, leaving a remainder of 8.
The next digit of our result is 1. 
Result so far: 1.0
Subtract 21 from 29 to get 8.
Take the next digit (7) from the dividend and append it to 8, then repeat: 87 / 21

Advancing to step 3:
If we divide 87 by 21, we get 4 and a remainder of 3.
The next digit of our result is 4. 
Result so far: 14.0
Subtract 84 from 87 to get 3.
Include the next digit (4) from the dividend after 3, then repeat: 34 / 21

Let's proceed to step 4:
21 goes into 34 1 times with a remainder of 13.
Record the quotient 1 as the next digit in the result. 
Result so far: 141.0
Deduct 21 from 34 and we're left with 13.
Take the next digit (4) from the dividend and append it to 13, then repeat: 134 / 21

Moving on to step 5:
21 can be fit into 134 6 times, resulting in a remainder of 8.
Record the quotient 6 as the next digit in the result. 
Result so far: 1416.0
If we take 126 away from 134, we end up with 8.
Bring next digit (2) of the dividend behind the 8 and repeat the process: 82 / 21

On to step 6:
82 divided by 21 is 3 with a remainder of 19.
Write down 3 as next digit of the result. 
Result so far: 14163.0
Deduct 63 from 82 and we're left with 19.
Take the next digit (6) from the dividend and append it to 19, then repeat: 196 / 21

On to step 7:
When dividing 196 by 21, we get 9 with a remainder of 7.
The number 9 becomes the next digit in our result. 
Result so far: 141639.0
Subtract 189 from 196 to get 7.
Include the next digit (0) from the dividend after 7, then repeat: 70 / 21

Going ahead to step 8:
When dividing 70 by 21, we get 3 with a remainder of 7.
The number 3 becomes the next digit in our result. 
Result so far: 1416393.0
The remainder is 7 after subtracting 63 from 70.
Since there are no more digits in the dividend, we add a zero to the remainder making it 70, and continue the process.

Going ahead to step 9:
21 goes into 70 3 times with a remainder of 7.
Record the quotient 3 as the next digit in the result. 
Result so far: 1416393.3
Subtract 63 from 70 to 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.

Going ahead to step 10:
The number 21 fits into 70 3 times, leaving a remainder of 7.
Record the quotient 3 as the next digit in the result. 
Result so far: 1416393.33
The remainder is 7 after subtracting 63 from 70.
Since there are no more digits in the dividend, we add a zero to the remainder making it 70, and continue the process.

The final outcome is 1416393.33, with a leftover of 0.007.