We look at the division of 339789 by 17 
We're looking to find how many times 17 goes into 339789.

Advancing to step 1:
3 divided by 17 is 0 with a remainder of 3.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we subtract 0 from 3, we get 3.
Take the next digit (3) from the dividend and append it to 3, then repeat: 33 / 17

Step 2:
17 goes into 33 1 times with a remainder of 16.
Use 1 as the next digit of our solution. 
Result so far: 1.0
If we subtract 17 from 33, we get 16.
Bring next digit (9) of the dividend behind the 16 and repeat the process: 169 / 17

Step 3:
The number 17 fits into 169 9 times, leaving a remainder of 16.
Write down 9 as next digit of the result. 
Result so far: 19.0
The remainder is 16 after subtracting 153 from 169.
Fetch the next digit (7) from the dividend, attach it to 16 and continue: 167 / 17

Let's proceed to step 4:
The number 17 fits into 167 9 times, leaving a remainder of 14.
Write down 9 as next digit of the result. 
Result so far: 199.0
If we subtract 153 from 167, we get 14.
Bring next digit (8) of the dividend behind the 14 and repeat the process: 148 / 17

Advancing to step 5:
If we divide 148 by 17, we get 8 and a remainder of 12.
Use 8 as the next digit of our solution. 
Result so far: 1998.0
Subtract 136 from 148 to get 12.
Fetch the next digit (9) from the dividend, attach it to 12 and continue: 129 / 17

Advancing to step 6:
The number 17 fits into 129 7 times, leaving a remainder of 10.
The next digit of our result is 7. 
Result so far: 19987.0
Subtracting 119 from 129 leaves us with 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Going ahead to step 7:
The number 17 fits into 100 5 times, leaving a remainder of 15.
Record the quotient 5 as the next digit in the result. 
Result so far: 19987.5
The remainder is 15 after subtracting 85 from 100.
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 8:
17 goes into 150 8 times with a remainder of 14.
The number 8 becomes the next digit in our result. 
Result so far: 19987.58
Subtract 136 from 150 to 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.

Step 9:
If we divide 140 by 17, we get 8 and a remainder of 4.
The next digit of our result is 8. 
Result so far: 19987.588
Subtract 136 from 140 to get 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

After the division, we end up with 19987.588 and a remainder of 0.0004.