29935582 ÷ 21 
We want to figure out the number of times 29935582 can be divided by 21.

Going ahead to step 1:
2 divided by 21 is 0 with a remainder of 2.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 2 and we're left with 2.
Append the next digit (9) from the dividend to 2 and continue with: 29 / 21

Moving on to step 2:
21 goes into 29 1 times with a remainder of 8.
Write down 1 as next digit of the result. 
Result so far: 1.0
If we subtract 21 from 29, we get 8.
Append the next digit (9) from the dividend to 8 and continue with: 89 / 21

Moving on to step 3:
When dividing 89 by 21, we get 4 with a remainder of 5.
Record the quotient 4 as the next digit in the result. 
Result so far: 14.0
If we take 84 away from 89, we end up with 5.
Take the next digit (3) from the dividend and append it to 5, then repeat: 53 / 21

Going ahead to step 4:
21 can be fit into 53 2 times, resulting in a remainder of 11.
The next digit of our result is 2. 
Result so far: 142.0
Subtracting 42 from 53 leaves us with 11.
Append the next digit (5) from the dividend to 11 and continue with: 115 / 21

Advancing to step 5:
21 goes into 115 5 times with a remainder of 10.
Put 5 as the next digit of the answer. 
Result so far: 1425.0
Subtracting 105 from 115 leaves us with 10.
Bring next digit (5) of the dividend behind the 10 and repeat the process: 105 / 21

On to step 6:
When dividing 105 by 21, we get 5 with a remainder of 0.
Write down 5 as next digit of the result. 
Result so far: 14255.0
Deduct 105 from 105 and we're left with 0.
Fetch the next digit (8) from the dividend, attach it to 0 and continue: 8 / 21

Moving on to step 7:
8 divided by 21 is 0 with a remainder of 8.
The next digit of our result is 0. 
Result so far: 142550.0
The remainder is 8 after subtracting 0 from 8.
Append the next digit (2) from the dividend to 8 and continue with: 82 / 21

Let's proceed to step 8:
21 can be fit into 82 3 times, resulting in a remainder of 19.
The number 3 becomes the next digit in our result. 
Result so far: 1425503.0
Deduct 63 from 82 and we're left with 19.
Since there are no more digits in the dividend, we add a zero to the remainder making it 190, and continue the process.

Let's proceed to step 9:
When dividing 190 by 21, we get 9 with a remainder of 1.
Write down 9 as next digit of the result. 
Result so far: 1425503.9
Deduct 189 from 190 and we're left with 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

Step 10:
If we divide 10 by 21, we get 0 and a remainder of 10.
Write down 0 as next digit of the result. 
Result so far: 1425503.9
Deduct 0 from 10 and we're left with 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Going ahead to step 11:
21 goes into 100 4 times with a remainder of 16.
Put 4 as the next digit of the answer. 
Result so far: 1425503.904
Subtract 84 from 100 to get 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

Step 12:
21 can be fit into 160 7 times, resulting in a remainder of 13.
Record the quotient 7 as the next digit in the result. 
Result so far: 1425503.9047
Subtract 147 from 160 to get 13.
Since there are no more digits in the dividend, we add a zero to the remainder making it 130, and continue the process.

On to step 13:
130 divided by 21 is 6 with a remainder of 4.
Use 6 as the next digit of our solution. 
Result so far: 1425503.90476
The remainder is 4 after subtracting 126 from 130.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

On to step 14:
When dividing 40 by 21, we get 1 with a remainder of 19.
The next digit of our result is 1. 
Result so far: 1425503.904761
Subtract 21 from 40 to get 19.
Since there are no more digits in the dividend, we add a zero to the remainder making it 190, and continue the process.

Going ahead to step 15:
21 can be fit into 190 9 times, resulting in a remainder of 1.
The next digit of our result is 9. 
Result so far: 1425503.9047619
Subtracting 189 from 190 leaves us with 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

Going ahead to step 16:
When dividing 10 by 21, we get 0 with a remainder of 10.
Record the quotient 0 as the next digit in the result. 
Result so far: 1425503.9047619
Subtracting 0 from 10 leaves us with 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

The final result is 1425503.9047619 with a remainder of 1e-08.