Let's divide 439509 by 19
We're looking to find how many times 19 goes into 439509.

Going ahead to step 1:
If we divide 4 by 19, we get 0 and a remainder of 4.
Write down 0 as next digit of the result. 
Result so far: 0.0
Deduct 0 from 4 and we're left with 4.
Grab the next digit (3) from the dividend, add it to 4, then carry on: 43 / 19

Advancing to step 2:
19 can be fit into 43 2 times, resulting in a remainder of 5.
Write down 2 as next digit of the result. 
Result so far: 2.0
If we subtract 38 from 43, we get 5.
Grab the next digit (9) from the dividend, add it to 5, then carry on: 59 / 19

On to step 3:
When dividing 59 by 19, we get 3 with a remainder of 2.
Write down 3 as next digit of the result. 
Result so far: 23.0
If we take 57 away from 59, we end up with 2.
Take the next digit (5) from the dividend and append it to 2, then repeat: 25 / 19

Step 4:
If we divide 25 by 19, we get 1 and a remainder of 6.
Write down 1 as next digit of the result. 
Result so far: 231.0
Deduct 19 from 25 and we're left with 6.
Fetch the next digit (0) from the dividend, attach it to 6 and continue: 60 / 19

Moving on to step 5:
When dividing 60 by 19, we get 3 with a remainder of 3.
Record the quotient 3 as the next digit in the result. 
Result so far: 2313.0
If we subtract 57 from 60, we get 3.
Bring next digit (9) of the dividend behind the 3 and repeat the process: 39 / 19

On to step 6:
The number 19 fits into 39 2 times, leaving a remainder of 1.
Write down 2 as next digit of the result. 
Result so far: 23132.0
Subtract 38 from 39 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.

Going ahead to step 7:
The number 19 fits into 10 0 times, leaving a remainder of 10.
The number 0 becomes the next digit in our result. 
Result so far: 23132.0
The remainder is 10 after subtracting 0 from 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

On to step 8:
The number 19 fits into 100 5 times, leaving a remainder of 5.
The next digit of our result is 5. 
Result so far: 23132.05
The remainder is 5 after subtracting 95 from 100.
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 9:
19 can be fit into 50 2 times, resulting in a remainder of 12.
The next digit of our result is 2. 
Result so far: 23132.052
If we subtract 38 from 50, we 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.

On to step 10:
19 can be fit into 120 6 times, resulting in a remainder of 6.
Put 6 as the next digit of the answer. 
Result so far: 23132.0526
Deduct 114 from 120 and we're left with 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Moving on to step 11:
60 divided by 19 is 3 with a remainder of 3.
Use 3 as the next digit of our solution. 
Result so far: 23132.05263
Deduct 57 from 60 and we're left 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.

Step 12:
The number 19 fits into 30 1 times, leaving a remainder of 11.
Put 1 as the next digit of the answer. 
Result so far: 23132.052631
The remainder is 11 after subtracting 19 from 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 110, and continue the process.

Step 13:
110 divided by 19 is 5 with a remainder of 15.
Write down 5 as next digit of the result. 
Result so far: 23132.0526315
Subtracting 95 from 110 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.

Advancing to step 14:
19 can be fit into 150 7 times, resulting in a remainder of 17.
Write down 7 as next digit of the result. 
Result so far: 23132.05263157
Subtract 133 from 150 to get 17.
Since there are no more digits in the dividend, we add a zero to the remainder making it 170, and continue the process.

The final result is 23132.05263157 with a remainder of 1.7e-08.