We're dividing 172008 by 4 
We're looking to find how many times 4 goes into 172008.

Step 1:
If we divide 1 by 4, we get 0 and a remainder of 1.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we take 0 away from 1, we end up with 1.
Take the next digit (7) from the dividend and append it to 1, then repeat: 17 / 4

Let's proceed to step 2:
When dividing 17 by 4, we get 4 with a remainder of 1.
Use 4 as the next digit of our solution. 
Result so far: 4.0
If we take 16 away from 17, we end up with 1.
Bring next digit (2) of the dividend behind the 1 and repeat the process: 12 / 4

Moving on to step 3:
The number 4 fits into 12 3 times, leaving a remainder of 0.
The number 3 becomes the next digit in our result. 
Result so far: 43.0
The remainder is 0 after subtracting 12 from 12.
Fetch the next digit (0) from the dividend, attach it to 0 and continue: 0 / 4

Step 4:
If we divide 0 by 4, we get 0 and a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 430.0
Subtract 0 from 0 to get 0.
Fetch the next digit (0) from the dividend, attach it to 0 and continue: 0 / 4

Let's proceed to step 5:
4 goes into 0 0 times with a remainder of 0.
The next digit of our result is 0. 
Result so far: 4300.0
If we take 0 away from 0, we end up with 0.
Fetch the next digit (8) from the dividend, attach it to 0 and continue: 8 / 4

Let's proceed to step 6:
4 can be fit into 8 2 times, resulting in a remainder of 0.
Use 2 as the next digit of our solution. 
Result so far: 43002.0
If we take 8 away from 8, we end up with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

On to step 7:
4 goes into 0 0 times with a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 43002.0
Deduct 0 from 0 and we're left with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Step 8:
The number 4 fits into 0 0 times, leaving a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 43002.0
If we take 0 away from 0, we end up with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

The final outcome is 43002.0, with a leftover of 0.0.