We're dividing 155159 by 39 
Let's see how many times 39 fits into 155159.

Moving on to step 1:
If we divide 1 by 39, we get 0 and a remainder of 1.
The next digit of our result is 0. 
Result so far: 0.0
The remainder is 1 after subtracting 0 from 1.
Grab the next digit (5) from the dividend, add it to 1, then carry on: 15 / 39

Let's proceed to step 2:
15 divided by 39 is 0 with a remainder of 15.
The next digit of our result is 0. 
Result so far: 0.0
Subtracting 0 from 15 leaves us with 15.
Append the next digit (5) from the dividend to 15 and continue with: 155 / 39

Going ahead to step 3:
When dividing 155 by 39, we get 3 with a remainder of 38.
Put 3 as the next digit of the answer. 
Result so far: 3.0
Subtracting 117 from 155 leaves us with 38.
Include the next digit (1) from the dividend after 38, then repeat: 381 / 39

Going ahead to step 4:
381 divided by 39 is 9 with a remainder of 30.
Write down 9 as next digit of the result. 
Result so far: 39.0
The remainder is 30 after subtracting 351 from 381.
Bring next digit (5) of the dividend behind the 30 and repeat the process: 305 / 39

Moving on to step 5:
39 goes into 305 7 times with a remainder of 32.
Use 7 as the next digit of our solution. 
Result so far: 397.0
Deduct 273 from 305 and we're left with 32.
Grab the next digit (9) from the dividend, add it to 32, then carry on: 329 / 39

Step 6:
If we divide 329 by 39, we get 8 and a remainder of 17.
Record the quotient 8 as the next digit in the result. 
Result so far: 3978.0
Subtract 312 from 329 to get 17.
Since there are no more digits in the dividend, we add a zero to the remainder making it 170, and continue the process.

On to step 7:
When dividing 170 by 39, we get 4 with a remainder of 14.
The next digit of our result is 4. 
Result so far: 3978.4
If we take 156 away from 170, we end up with 14.
Since there are no more digits in the dividend, we add a zero to the remainder making it 140, and continue the process.

Let's proceed to step 8:
39 can be fit into 140 3 times, resulting in a remainder of 23.
The number 3 becomes the next digit in our result. 
Result so far: 3978.43
Deduct 117 from 140 and we're left with 23.
Since there are no more digits in the dividend, we add a zero to the remainder making it 230, and continue the process.

Advancing to step 9:
39 goes into 230 5 times with a remainder of 35.
Use 5 as the next digit of our solution. 
Result so far: 3978.435
If we take 195 away from 230, we end up with 35.
Since there are no more digits in the dividend, we add a zero to the remainder making it 350, and continue the process.

Let's proceed to step 10:
The number 39 fits into 350 8 times, leaving a remainder of 38.
Record the quotient 8 as the next digit in the result. 
Result so far: 3978.4358
If we subtract 312 from 350, we get 38.
Since there are no more digits in the dividend, we add a zero to the remainder making it 380, and continue the process.

Advancing to step 11:
The number 39 fits into 380 9 times, leaving a remainder of 29.
Use 9 as the next digit of our solution. 
Result so far: 3978.43589
Deduct 351 from 380 and we're left with 29.
Since there are no more digits in the dividend, we add a zero to the remainder making it 290, and continue the process.

On to step 12:
290 divided by 39 is 7 with a remainder of 17.
The number 7 becomes the next digit in our result. 
Result so far: 3978.435897
Subtract 273 from 290 to get 17.
Since there are no more digits in the dividend, we add a zero to the remainder making it 170, and continue the process.

On to step 13:
When dividing 170 by 39, we get 4 with a remainder of 14.
Write down 4 as next digit of the result. 
Result so far: 3978.4358974
Subtract 156 from 170 to 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.

Step 14:
The number 39 fits into 140 3 times, leaving a remainder of 23.
The next digit of our result is 3. 
Result so far: 3978.43589743
Deduct 117 from 140 and we're left with 23.
Since there are no more digits in the dividend, we add a zero to the remainder making it 230, and continue the process.

The final result is 3978.43589743 with a remainder of 2.3e-08.