We divide 165139 by 39
We're looking to find how many times 39 goes into 165139.

Advancing to step 1:
The number 39 fits into 1 0 times, leaving a remainder of 1.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 1 and we're left with 1.
Append the next digit (6) from the dividend to 1 and continue with: 16 / 39

Advancing to step 2:
If we divide 16 by 39, we get 0 and a remainder of 16.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 16 to get 16.
Bring next digit (5) of the dividend behind the 16 and repeat the process: 165 / 39

Let's proceed to step 3:
When dividing 165 by 39, we get 4 with a remainder of 9.
Put 4 as the next digit of the answer. 
Result so far: 4.0
Deduct 156 from 165 and we're left with 9.
Include the next digit (1) from the dividend after 9, then repeat: 91 / 39

Advancing to step 4:
39 goes into 91 2 times with a remainder of 13.
The next digit of our result is 2. 
Result so far: 42.0
The remainder is 13 after subtracting 78 from 91.
Grab the next digit (3) from the dividend, add it to 13, then carry on: 133 / 39

Let's proceed to step 5:
39 goes into 133 3 times with a remainder of 16.
The number 3 becomes the next digit in our result. 
Result so far: 423.0
The remainder is 16 after subtracting 117 from 133.
Take the next digit (9) from the dividend and append it to 16, then repeat: 169 / 39

On to step 6:
The number 39 fits into 169 4 times, leaving a remainder of 13.
Write down 4 as next digit of the result. 
Result so far: 4234.0
Subtract 156 from 169 to get 13.
Since there are no more digits in the dividend, we add a zero to the remainder making it 130, and continue the process.

Moving on to step 7:
The number 39 fits into 130 3 times, leaving a remainder of 13.
The next digit of our result is 3. 
Result so far: 4234.3
Deduct 117 from 130 and we're left with 13.
Since there are no more digits in the dividend, we add a zero to the remainder making it 130, and continue the process.

On to step 8:
39 can be fit into 130 3 times, resulting in a remainder of 13.
Put 3 as the next digit of the answer. 
Result so far: 4234.33
If we subtract 117 from 130, we get 13.
Since there are no more digits in the dividend, we add a zero to the remainder making it 130, and continue the process.

The final outcome is 4234.33, with a leftover of 0.013.