We're dividing 171124 by 39 
Our goal is to divide 171124 by 39.

Step 1:
When dividing 1 by 39, we get 0 with 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.
Bring next digit (7) of the dividend behind the 1 and repeat the process: 17 / 39

Let's proceed to step 2:
17 divided by 39 is 0 with a remainder of 17.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 17, we get 17.
Grab the next digit (1) from the dividend, add it to 17, then carry on: 171 / 39

Going ahead to step 3:
The number 39 fits into 171 4 times, leaving a remainder of 15.
Put 4 as the next digit of the answer. 
Result so far: 4.0
The remainder is 15 after subtracting 156 from 171.
Fetch the next digit (1) from the dividend, attach it to 15 and continue: 151 / 39

Let's proceed to step 4:
If we divide 151 by 39, we get 3 and a remainder of 34.
Put 3 as the next digit of the answer. 
Result so far: 43.0
Deduct 117 from 151 and we're left with 34.
Append the next digit (2) from the dividend to 34 and continue with: 342 / 39

Step 5:
39 can be fit into 342 8 times, resulting in a remainder of 30.
Use 8 as the next digit of our solution. 
Result so far: 438.0
The remainder is 30 after subtracting 312 from 342.
Take the next digit (4) from the dividend and append it to 30, then repeat: 304 / 39

On to step 6:
The number 39 fits into 304 7 times, leaving a remainder of 31.
The number 7 becomes the next digit in our result. 
Result so far: 4387.0
Subtracting 273 from 304 leaves us with 31.
Since there are no more digits in the dividend, we add a zero to the remainder making it 310, and continue the process.

On to step 7:
The number 39 fits into 310 7 times, leaving a remainder of 37.
The number 7 becomes the next digit in our result. 
Result so far: 4387.7
Subtracting 273 from 310 leaves us with 37.
Since there are no more digits in the dividend, we add a zero to the remainder making it 370, and continue the process.

Advancing to step 8:
39 can be fit into 370 9 times, resulting in a remainder of 19.
The number 9 becomes the next digit in our result. 
Result so far: 4387.79
If we take 351 away from 370, we end up with 19.
Since there are no more digits in the dividend, we add a zero to the remainder making it 190, and continue the process.

On to step 9:
190 divided by 39 is 4 with a remainder of 34.
The number 4 becomes the next digit in our result. 
Result so far: 4387.794
Subtract 156 from 190 to get 34.
Since there are no more digits in the dividend, we add a zero to the remainder making it 340, and continue the process.

Going ahead to step 10:
The number 39 fits into 340 8 times, leaving a remainder of 28.
Use 8 as the next digit of our solution. 
Result so far: 4387.7948
Subtract 312 from 340 to get 28.
Since there are no more digits in the dividend, we add a zero to the remainder making it 280, and continue the process.

Going ahead to step 11:
39 goes into 280 7 times with a remainder of 7.
Record the quotient 7 as the next digit in the result. 
Result so far: 4387.79487
If we subtract 273 from 280, we get 7.
Since there are no more digits in the dividend, we add a zero to the remainder making it 70, and continue the process.

On to step 12:
The number 39 fits into 70 1 times, leaving a remainder of 31.
The next digit of our result is 1. 
Result so far: 4387.794871
If we take 39 away from 70, we end up with 31.
Since there are no more digits in the dividend, we add a zero to the remainder making it 310, and continue the process.

On to step 13:
When dividing 310 by 39, we get 7 with a remainder of 37.
The next digit of our result is 7. 
Result so far: 4387.7948717
Subtract 273 from 310 to get 37.
Since there are no more digits in the dividend, we add a zero to the remainder making it 370, and continue the process.

Step 14:
370 divided by 39 is 9 with a remainder of 19.
The number 9 becomes the next digit in our result. 
Result so far: 4387.79487179
Deduct 351 from 370 and we're left with 19.
Since there are no more digits in the dividend, we add a zero to the remainder making it 190, and continue the process.

After the division, we end up with 4387.79487179 and a remainder of 1.9e-08.