We're dividing 419309 by 21 
Let's see how many times 21 fits into 419309.

Moving on to step 1:
4 divided by 21 is 0 with a remainder of 4.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 4 after subtracting 0 from 4.
Take the next digit (1) from the dividend and append it to 4, then repeat: 41 / 21

Let's proceed to step 2:
21 goes into 41 1 times with a remainder of 20.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
Subtract 21 from 41 to get 20.
Take the next digit (9) from the dividend and append it to 20, then repeat: 209 / 21

Going ahead to step 3:
21 goes into 209 9 times with a remainder of 20.
Record the quotient 9 as the next digit in the result. 
Result so far: 19.0
The remainder is 20 after subtracting 189 from 209.
Include the next digit (3) from the dividend after 20, then repeat: 203 / 21

Let's proceed to step 4:
When dividing 203 by 21, we get 9 with a remainder of 14.
Write down 9 as next digit of the result. 
Result so far: 199.0
The remainder is 14 after subtracting 189 from 203.
Fetch the next digit (0) from the dividend, attach it to 14 and continue: 140 / 21

Going ahead to step 5:
21 can be fit into 140 6 times, resulting in a remainder of 14.
Write down 6 as next digit of the result. 
Result so far: 1996.0
Subtract 126 from 140 to get 14.
Fetch the next digit (9) from the dividend, attach it to 14 and continue: 149 / 21

Let's proceed to step 6:
When dividing 149 by 21, we get 7 with a remainder of 2.
Put 7 as the next digit of the answer. 
Result so far: 19967.0
If we subtract 147 from 149, 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.

Let's proceed to step 7:
When dividing 20 by 21, we get 0 with a remainder of 20.
Record the quotient 0 as the next digit in the result. 
Result so far: 19967.0
If we take 0 away from 20, we end up 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.

On to step 8:
If we divide 200 by 21, we get 9 and a remainder of 11.
Record the quotient 9 as the next digit in the result. 
Result so far: 19967.09
If we subtract 189 from 200, we 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.

Step 9:
If we divide 110 by 21, we get 5 and a remainder of 5.
Write down 5 as next digit of the result. 
Result so far: 19967.095
Subtracting 105 from 110 leaves us 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.

Going ahead to step 10:
If we divide 50 by 21, we get 2 and a remainder of 8.
Use 2 as the next digit of our solution. 
Result so far: 19967.0952
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.

Moving on to step 11:
When dividing 80 by 21, we get 3 with a remainder of 17.
Record the quotient 3 as the next digit in the result. 
Result so far: 19967.09523
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.

On to step 12:
The number 21 fits into 170 8 times, leaving a remainder of 2.
The number 8 becomes the next digit in our result. 
Result so far: 19967.095238
If we take 168 away from 170, we end up 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.

On to step 13:
If we divide 20 by 21, we get 0 and a remainder of 20.
The number 0 becomes the next digit in our result. 
Result so far: 19967.095238
If we take 0 away from 20, we end up 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.

Let's proceed to step 14:
When dividing 200 by 21, we get 9 with a remainder of 11.
The next digit of our result is 9. 
Result so far: 19967.09523809
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.

The quotient of the division is 19967.09523809, and the remainder is 1.1e-08.