We're dividing 403721 by 19 
Let's see how many times 19 fits into 403721.

Advancing to step 1:
19 can be fit into 4 0 times, resulting in a remainder of 4.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 4 to get 4.
Include the next digit (0) from the dividend after 4, then repeat: 40 / 19

Going ahead to step 2:
When dividing 40 by 19, we get 2 with a remainder of 2.
The number 2 becomes the next digit in our result. 
Result so far: 2.0
Deduct 38 from 40 and we're left with 2.
Include the next digit (3) from the dividend after 2, then repeat: 23 / 19

Let's proceed to step 3:
The number 19 fits into 23 1 times, leaving a remainder of 4.
Record the quotient 1 as the next digit in the result. 
Result so far: 21.0
If we subtract 19 from 23, we get 4.
Include the next digit (7) from the dividend after 4, then repeat: 47 / 19

Moving on to step 4:
When dividing 47 by 19, we get 2 with a remainder of 9.
Record the quotient 2 as the next digit in the result. 
Result so far: 212.0
Subtract 38 from 47 to get 9.
Bring next digit (2) of the dividend behind the 9 and repeat the process: 92 / 19

On to step 5:
The number 19 fits into 92 4 times, leaving a remainder of 16.
Record the quotient 4 as the next digit in the result. 
Result so far: 2124.0
If we subtract 76 from 92, we get 16.
Fetch the next digit (1) from the dividend, attach it to 16 and continue: 161 / 19

On to step 6:
The number 19 fits into 161 8 times, leaving a remainder of 9.
Put 8 as the next digit of the answer. 
Result so far: 21248.0
The remainder is 9 after subtracting 152 from 161.
Since there are no more digits in the dividend, we add a zero to the remainder making it 90, and continue the process.

Advancing to step 7:
If we divide 90 by 19, we get 4 and a remainder of 14.
Put 4 as the next digit of the answer. 
Result so far: 21248.4
If we subtract 76 from 90, we get 14.
Since there are no more digits in the dividend, we add a zero to the remainder making it 140, and continue the process.

Let's proceed to step 8:
If we divide 140 by 19, we get 7 and a remainder of 7.
The next digit of our result is 7. 
Result so far: 21248.47
If we take 133 away from 140, we end up with 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 9:
The number 19 fits into 70 3 times, leaving a remainder of 13.
Put 3 as the next digit of the answer. 
Result so far: 21248.473
Deduct 57 from 70 and we're left with 13.
Since there are no more digits in the dividend, we add a zero to the remainder making it 130, and continue the process.

Going ahead to step 10:
When dividing 130 by 19, we get 6 with a remainder of 16.
Put 6 as the next digit of the answer. 
Result so far: 21248.4736
Subtract 114 from 130 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.

Going ahead to step 11:
If we divide 160 by 19, we get 8 and a remainder of 8.
Write down 8 as next digit of the result. 
Result so far: 21248.47368
Subtracting 152 from 160 leaves us with 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Going ahead to step 12:
When dividing 80 by 19, we get 4 with a remainder of 4.
Use 4 as the next digit of our solution. 
Result so far: 21248.473684
Subtracting 76 from 80 leaves us with 4.
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 13:
If we divide 40 by 19, we get 2 and a remainder of 2.
Write down 2 as next digit of the result. 
Result so far: 21248.4736842
If we subtract 38 from 40, 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.

On to step 14:
19 can be fit into 20 1 times, resulting in a remainder of 1.
Write down 1 as next digit of the result. 
Result so far: 21248.47368421
If we subtract 19 from 20, we get 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

The quotient of the division is 21248.47368421, and the remainder is 1e-09.