We look at the division of 399151 by 17 
Our goal is to divide 399151 by 17.

Step 1:
17 can be fit into 3 0 times, resulting in a remainder of 3.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtracting 0 from 3 leaves us with 3.
Bring next digit (9) of the dividend behind the 3 and repeat the process: 39 / 17

On to step 2:
17 can be fit into 39 2 times, resulting in a remainder of 5.
The number 2 becomes the next digit in our result. 
Result so far: 2.0
Subtract 34 from 39 to get 5.
Include the next digit (9) from the dividend after 5, then repeat: 59 / 17

Going ahead to step 3:
When dividing 59 by 17, we get 3 with a remainder of 8.
Write down 3 as next digit of the result. 
Result so far: 23.0
If we subtract 51 from 59, we get 8.
Bring next digit (1) of the dividend behind the 8 and repeat the process: 81 / 17

On to step 4:
When dividing 81 by 17, we get 4 with a remainder of 13.
Put 4 as the next digit of the answer. 
Result so far: 234.0
If we take 68 away from 81, we end up with 13.
Append the next digit (5) from the dividend to 13 and continue with: 135 / 17

Going ahead to step 5:
17 can be fit into 135 7 times, resulting in a remainder of 16.
Put 7 as the next digit of the answer. 
Result so far: 2347.0
The remainder is 16 after subtracting 119 from 135.
Take the next digit (1) from the dividend and append it to 16, then repeat: 161 / 17

Let's proceed to step 6:
If we divide 161 by 17, we get 9 and a remainder of 8.
Use 9 as the next digit of our solution. 
Result so far: 23479.0
Subtract 153 from 161 to get 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Step 7:
17 goes into 80 4 times with a remainder of 12.
Put 4 as the next digit of the answer. 
Result so far: 23479.4
If we subtract 68 from 80, 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 8:
The number 17 fits into 120 7 times, leaving a remainder of 1.
Write down 7 as next digit of the result. 
Result so far: 23479.47
Subtracting 119 from 120 leaves us with 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

On to step 9:
17 can be fit into 10 0 times, resulting in a remainder of 10.
Use 0 as the next digit of our solution. 
Result so far: 23479.47
If we take 0 away from 10, we end up 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.

Let's proceed to step 10:
100 divided by 17 is 5 with a remainder of 15.
The next digit of our result is 5. 
Result so far: 23479.4705
Deduct 85 from 100 and we're left 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.

Moving on to step 11:
When dividing 150 by 17, we get 8 with a remainder of 14.
The number 8 becomes the next digit in our result. 
Result so far: 23479.47058
The remainder is 14 after subtracting 136 from 150.
Since there are no more digits in the dividend, we add a zero to the remainder making it 140, and continue the process.

Advancing to step 12:
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: 23479.470588
If we subtract 136 from 140, we 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.

The final result is 23479.470588 with a remainder of 4e-07.