29876544 divided by 21 
Let's see how many times 21 fits into 29876544.

Advancing to step 1:
When dividing 2 by 21, we get 0 with a remainder of 2.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtracting 0 from 2 leaves us with 2.
Fetch the next digit (9) from the dividend, attach it to 2 and continue: 29 / 21

Moving on to step 2:
29 divided by 21 is 1 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.
Include the next digit (8) from the dividend after 8, then repeat: 88 / 21

Advancing to step 3:
88 divided by 21 is 4 with a remainder of 4.
The next digit of our result is 4. 
Result so far: 14.0
Subtracting 84 from 88 leaves us with 4.
Grab the next digit (7) from the dividend, add it to 4, then carry on: 47 / 21

Going ahead to step 4:
When dividing 47 by 21, we get 2 with a remainder of 5.
Put 2 as the next digit of the answer. 
Result so far: 142.0
Subtract 42 from 47 to get 5.
Take the next digit (6) from the dividend and append it to 5, then repeat: 56 / 21

Moving on to step 5:
If we divide 56 by 21, we get 2 and a remainder of 14.
The next digit of our result is 2. 
Result so far: 1422.0
Subtracting 42 from 56 leaves us with 14.
Grab the next digit (5) from the dividend, add it to 14, then carry on: 145 / 21

On to step 6:
If we divide 145 by 21, we get 6 and a remainder of 19.
The number 6 becomes the next digit in our result. 
Result so far: 14226.0
Deduct 126 from 145 and we're left with 19.
Take the next digit (4) from the dividend and append it to 19, then repeat: 194 / 21

Going ahead to step 7:
When dividing 194 by 21, we get 9 with a remainder of 5.
Use 9 as the next digit of our solution. 
Result so far: 142269.0
The remainder is 5 after subtracting 189 from 194.
Grab the next digit (4) from the dividend, add it to 5, then carry on: 54 / 21

On to step 8:
If we divide 54 by 21, we get 2 and a remainder of 12.
Put 2 as the next digit of the answer. 
Result so far: 1422692.0
If we take 42 away from 54, we end up with 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

Advancing to step 9:
If we divide 120 by 21, we get 5 and a remainder of 15.
Put 5 as the next digit of the answer. 
Result so far: 1422692.5
Subtracting 105 from 120 leaves us with 15.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

Step 10:
21 goes into 150 7 times with a remainder of 3.
The next digit of our result is 7. 
Result so far: 1422692.57
The remainder is 3 after subtracting 147 from 150.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

Advancing to step 11:
The number 21 fits into 30 1 times, leaving a remainder of 9.
Put 1 as the next digit of the answer. 
Result so far: 1422692.571
Subtract 21 from 30 to get 9.
Since there are no more digits in the dividend, we add a zero to the remainder making it 90, and continue the process.

Moving on to step 12:
21 can be fit into 90 4 times, resulting in a remainder of 6.
Write down 4 as next digit of the result. 
Result so far: 1422692.5714
Subtract 84 from 90 to get 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Advancing to step 13:
When dividing 60 by 21, we get 2 with a remainder of 18.
Record the quotient 2 as the next digit in the result. 
Result so far: 1422692.57142
Subtract 42 from 60 to get 18.
Since there are no more digits in the dividend, we add a zero to the remainder making it 180, and continue the process.

Going ahead to step 14:
180 divided by 21 is 8 with a remainder of 12.
Put 8 as the next digit of the answer. 
Result so far: 1422692.571428
Subtract 168 from 180 to get 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

Let's proceed to step 15:
21 can be fit into 120 5 times, resulting in a remainder of 15.
Use 5 as the next digit of our solution. 
Result so far: 1422692.5714285
Subtract 105 from 120 to get 15.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

Going ahead to step 16:
21 goes into 150 7 times with a remainder of 3.
Put 7 as the next digit of the answer. 
Result so far: 1422692.57142857
If we take 147 away from 150, we end up with 3.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

The quotient of the division is 1422692.57142857, and the remainder is 3e-09.