257985 ÷ 17 
Let's see how many times 17 fits into 257985.

Advancing to step 1:
The number 17 fits into 2 0 times, leaving a remainder of 2.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we take 0 away from 2, we end up with 2.
Bring next digit (5) of the dividend behind the 2 and repeat the process: 25 / 17

On to step 2:
When dividing 25 by 17, we get 1 with a remainder of 8.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
If we take 17 away from 25, we end up with 8.
Bring next digit (7) of the dividend behind the 8 and repeat the process: 87 / 17

Let's proceed to step 3:
If we divide 87 by 17, we get 5 and a remainder of 2.
Put 5 as the next digit of the answer. 
Result so far: 15.0
Subtracting 85 from 87 leaves us with 2.
Append the next digit (9) from the dividend to 2 and continue with: 29 / 17

Let's proceed to step 4:
29 divided by 17 is 1 with a remainder of 12.
Write down 1 as next digit of the result. 
Result so far: 151.0
If we take 17 away from 29, we end up with 12.
Include the next digit (8) from the dividend after 12, then repeat: 128 / 17

Let's proceed to step 5:
If we divide 128 by 17, we get 7 and a remainder of 9.
The next digit of our result is 7. 
Result so far: 1517.0
Subtracting 119 from 128 leaves us with 9.
Take the next digit (5) from the dividend and append it to 9, then repeat: 95 / 17

Step 6:
If we divide 95 by 17, we get 5 and a remainder of 10.
Use 5 as the next digit of our solution. 
Result so far: 15175.0
The remainder is 10 after subtracting 85 from 95.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Moving on to step 7:
The number 17 fits into 100 5 times, leaving a remainder of 15.
Use 5 as the next digit of our solution. 
Result so far: 15175.5
If we subtract 85 from 100, we get 15.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

On to step 8:
When dividing 150 by 17, we get 8 with a remainder of 14.
Put 8 as the next digit of the answer. 
Result so far: 15175.58
Subtracting 136 from 150 leaves us 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 9:
If we divide 140 by 17, we get 8 and a remainder of 4.
Put 8 as the next digit of the answer. 
Result so far: 15175.588
The remainder is 4 after subtracting 136 from 140.
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 15175.588 with a remainder of 0.0004.