We divide 638994 by 17
We're looking to find how many times 17 goes into 638994.

On to step 1:
When dividing 6 by 17, we get 0 with a remainder of 6.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 6 to get 6.
Fetch the next digit (3) from the dividend, attach it to 6 and continue: 63 / 17

On to step 2:
17 can be fit into 63 3 times, resulting in a remainder of 12.
Use 3 as the next digit of our solution. 
Result so far: 3.0
The remainder is 12 after subtracting 51 from 63.
Take the next digit (8) from the dividend and append it to 12, then repeat: 128 / 17

On to step 3:
When dividing 128 by 17, we get 7 with a remainder of 9.
Write down 7 as next digit of the result. 
Result so far: 37.0
Deduct 119 from 128 and we're left with 9.
Grab the next digit (9) from the dividend, add it to 9, then carry on: 99 / 17

Step 4:
If we divide 99 by 17, we get 5 and a remainder of 14.
The number 5 becomes the next digit in our result. 
Result so far: 375.0
If we subtract 85 from 99, we get 14.
Include the next digit (9) from the dividend after 14, then repeat: 149 / 17

Advancing to step 5:
If we divide 149 by 17, we get 8 and a remainder of 13.
Put 8 as the next digit of the answer. 
Result so far: 3758.0
Deduct 136 from 149 and we're left with 13.
Grab the next digit (4) from the dividend, add it to 13, then carry on: 134 / 17

Moving on to step 6:
The number 17 fits into 134 7 times, leaving a remainder of 15.
Put 7 as the next digit of the answer. 
Result so far: 37587.0
If we take 119 away from 134, we end up 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 7:
If we divide 150 by 17, we get 8 and a remainder of 14.
Write down 8 as next digit of the result. 
Result so far: 37587.8
If we subtract 136 from 150, 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.

On to step 8:
17 can be fit into 140 8 times, resulting in a remainder of 4.
The next digit of our result is 8. 
Result so far: 37587.88
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.

The final result is 37587.88 with a remainder of 0.004.