We look at the division of 339286 by 19 
We're looking to find how many times 19 goes into 339286.

Step 1:
The number 19 fits into 3 0 times, leaving a remainder of 3.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 3, we end up with 3.
Fetch the next digit (3) from the dividend, attach it to 3 and continue: 33 / 19

Going ahead to step 2:
If we divide 33 by 19, we get 1 and a remainder of 14.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
If we subtract 19 from 33, we get 14.
Take the next digit (9) from the dividend and append it to 14, then repeat: 149 / 19

On to step 3:
19 can be fit into 149 7 times, resulting in a remainder of 16.
Use 7 as the next digit of our solution. 
Result so far: 17.0
If we subtract 133 from 149, we get 16.
Bring next digit (2) of the dividend behind the 16 and repeat the process: 162 / 19

On to step 4:
When dividing 162 by 19, we get 8 with a remainder of 10.
Use 8 as the next digit of our solution. 
Result so far: 178.0
If we take 152 away from 162, we end up with 10.
Append the next digit (8) from the dividend to 10 and continue with: 108 / 19

Let's proceed to step 5:
108 divided by 19 is 5 with a remainder of 13.
Record the quotient 5 as the next digit in the result. 
Result so far: 1785.0
If we subtract 95 from 108, we get 13.
Append the next digit (6) from the dividend to 13 and continue with: 136 / 19

Going ahead to step 6:
19 goes into 136 7 times with a remainder of 3.
The number 7 becomes the next digit in our result. 
Result so far: 17857.0
Deduct 133 from 136 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 7:
19 goes into 30 1 times with a remainder of 11.
Record the quotient 1 as the next digit in the result. 
Result so far: 17857.1
If we take 19 away from 30, we end up with 11.
Since there are no more digits in the dividend, we add a zero to the remainder making it 110, and continue the process.

On to step 8:
The number 19 fits into 110 5 times, leaving a remainder of 15.
Use 5 as the next digit of our solution. 
Result so far: 17857.15
The remainder is 15 after subtracting 95 from 110.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

Going ahead to step 9:
If we divide 150 by 19, we get 7 and a remainder of 17.
The number 7 becomes the next digit in our result. 
Result so far: 17857.157
If we take 133 away from 150, we end up 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.

Advancing to step 10:
170 divided by 19 is 8 with a remainder of 18.
The next digit of our result is 8. 
Result so far: 17857.1578
If we take 152 away from 170, we end up with 18.
Since there are no more digits in the dividend, we add a zero to the remainder making it 180, and continue the process.

Let's proceed to step 11:
19 goes into 180 9 times with a remainder of 9.
The number 9 becomes the next digit in our result. 
Result so far: 17857.15789
If we subtract 171 from 180, we get 9.
Since there are no more digits in the dividend, we add a zero to the remainder making it 90, and continue the process.

Let's proceed to step 12:
19 goes into 90 4 times with a remainder of 14.
Record the quotient 4 as the next digit in the result. 
Result so far: 17857.157894
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 13:
140 divided by 19 is 7 with a remainder of 7.
Record the quotient 7 as the next digit in the result. 
Result so far: 17857.1578947
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.

Moving on to step 14:
19 can be fit into 70 3 times, resulting in a remainder of 13.
Use 3 as the next digit of our solution. 
Result so far: 17857.15789473
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.

The final outcome is 17857.15789473, with a leftover of 1.3e-08.