We look at the division of 438642 by 17 
Our goal is to divide 438642 by 17.

Let's proceed to step 1:
When dividing 4 by 17, we get 0 with a remainder of 4.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 4 leaves us with 4.
Fetch the next digit (3) from the dividend, attach it to 4 and continue: 43 / 17

On to step 2:
17 can be fit into 43 2 times, resulting in a remainder of 9.
Put 2 as the next digit of the answer. 
Result so far: 2.0
Deduct 34 from 43 and we're left with 9.
Include the next digit (8) from the dividend after 9, then repeat: 98 / 17

Moving on to step 3:
The number 17 fits into 98 5 times, leaving a remainder of 13.
Write down 5 as next digit of the result. 
Result so far: 25.0
Subtract 85 from 98 to get 13.
Take the next digit (6) from the dividend and append it to 13, then repeat: 136 / 17

Step 4:
When dividing 136 by 17, we get 8 with a remainder of 0.
Write down 8 as next digit of the result. 
Result so far: 258.0
Deduct 136 from 136 and we're left with 0.
Grab the next digit (4) from the dividend, add it to 0, then carry on: 4 / 17

Moving on to step 5:
17 goes into 4 0 times with a remainder of 4.
Use 0 as the next digit of our solution. 
Result so far: 2580.0
Subtract 0 from 4 to get 4.
Fetch the next digit (2) from the dividend, attach it to 4 and continue: 42 / 17

Let's proceed to step 6:
17 goes into 42 2 times with a remainder of 8.
Record the quotient 2 as the next digit in the result. 
Result so far: 25802.0
If we subtract 34 from 42, we 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.

Going ahead to step 7:
17 can be fit into 80 4 times, resulting in a remainder of 12.
Record the quotient 4 as the next digit in the result. 
Result so far: 25802.4
Subtract 68 from 80 to 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.

Step 8:
When dividing 120 by 17, we get 7 with a remainder of 1.
Put 7 as the next digit of the answer. 
Result so far: 25802.47
If we take 119 away from 120, we end up 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.

Advancing to step 9:
10 divided by 17 is 0 with a remainder of 10.
Put 0 as the next digit of the answer. 
Result so far: 25802.47
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.

Going ahead to step 10:
When dividing 100 by 17, we get 5 with a remainder of 15.
The next digit of our result is 5. 
Result so far: 25802.4705
Subtracting 85 from 100 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.

Step 11:
If we divide 150 by 17, we get 8 and a remainder of 14.
The number 8 becomes the next digit in our result. 
Result so far: 25802.47058
Deduct 136 from 150 and we're left 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.

Step 12:
The number 17 fits into 140 8 times, leaving a remainder of 4.
Write down 8 as next digit of the result. 
Result so far: 25802.470588
If we take 136 away from 140, we end up with 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 outcome is 25802.470588, with a leftover of 4e-07.