We look at the division of 179990 by 15 
Let's see how many times 15 fits into 179990.

Step 1:
If we divide 1 by 15, we get 0 and a remainder of 1.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 1 to get 1.
Include the next digit (7) from the dividend after 1, then repeat: 17 / 15

On to step 2:
17 divided by 15 is 1 with a remainder of 2.
Use 1 as the next digit of our solution. 
Result so far: 1.0
Subtracting 15 from 17 leaves us with 2.
Append the next digit (9) from the dividend to 2 and continue with: 29 / 15

Step 3:
15 can be fit into 29 1 times, resulting in a remainder of 14.
Write down 1 as next digit of the result. 
Result so far: 11.0
Subtracting 15 from 29 leaves us with 14.
Grab the next digit (9) from the dividend, add it to 14, then carry on: 149 / 15

Step 4:
15 can be fit into 149 9 times, resulting in a remainder of 14.
Put 9 as the next digit of the answer. 
Result so far: 119.0
Subtract 135 from 149 to get 14.
Bring next digit (9) of the dividend behind the 14 and repeat the process: 149 / 15

Moving on to step 5:
15 can be fit into 149 9 times, resulting in a remainder of 14.
Use 9 as the next digit of our solution. 
Result so far: 1199.0
Deduct 135 from 149 and we're left with 14.
Grab the next digit (0) from the dividend, add it to 14, then carry on: 140 / 15

Moving on to step 6:
If we divide 140 by 15, we get 9 and a remainder of 5.
Record the quotient 9 as the next digit in the result. 
Result so far: 11999.0
If we subtract 135 from 140, we get 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Let's proceed to step 7:
50 divided by 15 is 3 with a remainder of 5.
The number 3 becomes the next digit in our result. 
Result so far: 11999.3
Subtracting 45 from 50 leaves us with 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Step 8:
The number 15 fits into 50 3 times, leaving a remainder of 5.
Write down 3 as next digit of the result. 
Result so far: 11999.33
Deduct 45 from 50 and we're left with 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

The final result is 11999.33 with a remainder of 0.005.