We're dividing 138239 by 18 
Let's see how many times 18 fits into 138239.

Moving on to step 1:
1 divided by 18 is 0 with a remainder of 1.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we take 0 away from 1, we end up with 1.
Append the next digit (3) from the dividend to 1 and continue with: 13 / 18

Going ahead to step 2:
When dividing 13 by 18, we get 0 with a remainder of 13.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we take 0 away from 13, we end up with 13.
Bring next digit (8) of the dividend behind the 13 and repeat the process: 138 / 18

Moving on to step 3:
138 divided by 18 is 7 with a remainder of 12.
Put 7 as the next digit of the answer. 
Result so far: 7.0
If we take 126 away from 138, we end up with 12.
Take the next digit (2) from the dividend and append it to 12, then repeat: 122 / 18

Moving on to step 4:
When dividing 122 by 18, we get 6 with a remainder of 14.
The number 6 becomes the next digit in our result. 
Result so far: 76.0
Subtract 108 from 122 to get 14.
Fetch the next digit (3) from the dividend, attach it to 14 and continue: 143 / 18

On to step 5:
18 goes into 143 7 times with a remainder of 17.
The next digit of our result is 7. 
Result so far: 767.0
The remainder is 17 after subtracting 126 from 143.
Take the next digit (9) from the dividend and append it to 17, then repeat: 179 / 18

Advancing to step 6:
179 divided by 18 is 9 with a remainder of 17.
Write down 9 as next digit of the result. 
Result so far: 7679.0
Subtracting 162 from 179 leaves us with 17.
Since there are no more digits in the dividend, we add a zero to the remainder making it 170, and continue the process.

Going ahead to step 7:
18 goes into 170 9 times with a remainder of 8.
The number 9 becomes the next digit in our result. 
Result so far: 7679.9
If we subtract 162 from 170, 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.

Let's proceed to step 8:
18 goes into 80 4 times with a remainder of 8.
The number 4 becomes the next digit in our result. 
Result so far: 7679.94
If we subtract 72 from 80, 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.

Moving on to step 9:
The number 18 fits into 80 4 times, leaving a remainder of 8.
The next digit of our result is 4. 
Result so far: 7679.944
Subtract 72 from 80 to 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.

After the division, we end up with 7679.944 and a remainder of 0.0008.