We're dividing 408243 by 19 
We want to figure out the number of times 408243 can be divided by 19.

Let's proceed to step 1:
4 divided by 19 is 0 with a remainder of 4.
The next digit of our result is 0. 
Result so far: 0.0
The remainder is 4 after subtracting 0 from 4.
Bring next digit (0) of the dividend behind the 4 and repeat the process: 40 / 19

On to step 2:
40 divided by 19 is 2 with a remainder of 2.
The number 2 becomes the next digit in our result. 
Result so far: 2.0
Subtracting 38 from 40 leaves us with 2.
Take the next digit (8) from the dividend and append it to 2, then repeat: 28 / 19

Step 3:
19 can be fit into 28 1 times, resulting in a remainder of 9.
Put 1 as the next digit of the answer. 
Result so far: 21.0
Subtracting 19 from 28 leaves us with 9.
Take the next digit (2) from the dividend and append it to 9, then repeat: 92 / 19

Step 4:
When dividing 92 by 19, we get 4 with a remainder of 16.
The next digit of our result is 4. 
Result so far: 214.0
Subtracting 76 from 92 leaves us with 16.
Take the next digit (4) from the dividend and append it to 16, then repeat: 164 / 19

Let's proceed to step 5:
The number 19 fits into 164 8 times, leaving a remainder of 12.
Put 8 as the next digit of the answer. 
Result so far: 2148.0
The remainder is 12 after subtracting 152 from 164.
Grab the next digit (3) from the dividend, add it to 12, then carry on: 123 / 19

Let's proceed to step 6:
When dividing 123 by 19, we get 6 with a remainder of 9.
Use 6 as the next digit of our solution. 
Result so far: 21486.0
Deduct 114 from 123 and we're left with 9.
Since there are no more digits in the dividend, we add a zero to the remainder making it 90, and continue the process.

On to step 7:
When dividing 90 by 19, we get 4 with a remainder of 14.
The next digit of our result is 4. 
Result so far: 21486.4
Deduct 76 from 90 and we're left with 14.
Since there are no more digits in the dividend, we add a zero to the remainder making it 140, and continue the process.

Moving on to step 8:
If we divide 140 by 19, we get 7 and a remainder of 7.
Use 7 as the next digit of our solution. 
Result so far: 21486.47
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.

Advancing to step 9:
If we divide 70 by 19, we get 3 and a remainder of 13.
The number 3 becomes the next digit in our result. 
Result so far: 21486.473
Subtracting 57 from 70 leaves us 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.

Step 10:
The number 19 fits into 130 6 times, leaving a remainder of 16.
Record the quotient 6 as the next digit in the result. 
Result so far: 21486.4736
The remainder is 16 after subtracting 114 from 130.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

On to step 11:
When dividing 160 by 19, we get 8 with a remainder of 8.
Use 8 as the next digit of our solution. 
Result so far: 21486.47368
The remainder is 8 after subtracting 152 from 160.
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:
80 divided by 19 is 4 with a remainder of 4.
The number 4 becomes the next digit in our result. 
Result so far: 21486.473684
The remainder is 4 after subtracting 76 from 80.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Step 13:
19 can be fit into 40 2 times, resulting in a remainder of 2.
The next digit of our result is 2. 
Result so far: 21486.4736842
Deduct 38 from 40 and we're left 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.

Step 14:
The number 19 fits into 20 1 times, leaving a remainder of 1.
Record the quotient 1 as the next digit in the result. 
Result so far: 21486.47368421
Subtract 19 from 20 to 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 final result is 21486.47368421 with a remainder of 1e-09.