We divide 40828280 by 21
Let's see how many times 21 fits into 40828280.

On to step 1:
21 goes into 4 0 times with a remainder of 4.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
The remainder is 4 after subtracting 0 from 4.
Include the next digit (0) from the dividend after 4, then repeat: 40 / 21

Going ahead to step 2:
21 goes into 40 1 times with a remainder of 19.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
If we subtract 21 from 40, we get 19.
Take the next digit (8) from the dividend and append it to 19, then repeat: 198 / 21

Step 3:
When dividing 198 by 21, we get 9 with a remainder of 9.
Use 9 as the next digit of our solution. 
Result so far: 19.0
Deduct 189 from 198 and we're left with 9.
Fetch the next digit (2) from the dividend, attach it to 9 and continue: 92 / 21

Advancing to step 4:
21 goes into 92 4 times with a remainder of 8.
The number 4 becomes the next digit in our result. 
Result so far: 194.0
Subtracting 84 from 92 leaves us with 8.
Include the next digit (8) from the dividend after 8, then repeat: 88 / 21

Moving on to step 5:
If we divide 88 by 21, we get 4 and a remainder of 4.
Put 4 as the next digit of the answer. 
Result so far: 1944.0
Subtract 84 from 88 to get 4.
Append the next digit (2) from the dividend to 4 and continue with: 42 / 21

Going ahead to step 6:
21 can be fit into 42 2 times, resulting in a remainder of 0.
Put 2 as the next digit of the answer. 
Result so far: 19442.0
If we take 42 away from 42, we end up with 0.
Append the next digit (8) from the dividend to 0 and continue with: 8 / 21

Let's proceed to step 7:
21 can be fit into 8 0 times, resulting in a remainder of 8.
Write down 0 as next digit of the result. 
Result so far: 194420.0
If we take 0 away from 8, we end up with 8.
Fetch the next digit (0) from the dividend, attach it to 8 and continue: 80 / 21

Moving on to step 8:
The number 21 fits into 80 3 times, leaving a remainder of 17.
Record the quotient 3 as the next digit in the result. 
Result so far: 1944203.0
Subtracting 63 from 80 leaves us with 17.
Since there are no more digits in the dividend, we add a zero to the remainder making it 170, and continue the process.

Step 9:
The number 21 fits into 170 8 times, leaving a remainder of 2.
Write down 8 as next digit of the result. 
Result so far: 1944203.8
Subtracting 168 from 170 leaves us with 2.
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 10:
20 divided by 21 is 0 with a remainder of 20.
Put 0 as the next digit of the answer. 
Result so far: 1944203.8
Deduct 0 from 20 and we're left with 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Advancing to step 11:
21 goes into 200 9 times with a remainder of 11.
Use 9 as the next digit of our solution. 
Result so far: 1944203.809
Subtract 189 from 200 to get 11.
Since there are no more digits in the dividend, we add a zero to the remainder making it 110, and continue the process.

Advancing to step 12:
When dividing 110 by 21, we get 5 with a remainder of 5.
The number 5 becomes the next digit in our result. 
Result so far: 1944203.8095
Deduct 105 from 110 and we're left 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.

Advancing to step 13:
The number 21 fits into 50 2 times, leaving a remainder of 8.
The next digit of our result is 2. 
Result so far: 1944203.80952
If we subtract 42 from 50, we 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.

On to step 14:
80 divided by 21 is 3 with a remainder of 17.
Write down 3 as next digit of the result. 
Result so far: 1944203.809523
The remainder is 17 after subtracting 63 from 80.
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 15:
170 divided by 21 is 8 with a remainder of 2.
Write down 8 as next digit of the result. 
Result so far: 1944203.8095238
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.

Going ahead to step 16:
21 can be fit into 20 0 times, resulting in a remainder of 20.
The next digit of our result is 0. 
Result so far: 1944203.8095238
Subtracting 0 from 20 leaves us with 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

In conclusion, the division gives 1944203.8095238 with a balance of 2e-08.