We look at the division of 39171 by 72 
We want to figure out the number of times 39171 can be divided by 72.

Step 1:
The number 72 fits into 3 0 times, leaving a remainder of 3.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 3 to get 3.
Grab the next digit (9) from the dividend, add it to 3, then carry on: 39 / 72

Let's proceed to step 2:
If we divide 39 by 72, we get 0 and a remainder of 39.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 39, we end up with 39.
Include the next digit (1) from the dividend after 39, then repeat: 391 / 72

Let's proceed to step 3:
391 divided by 72 is 5 with a remainder of 31.
Write down 5 as next digit of the result. 
Result so far: 5.0
Deduct 360 from 391 and we're left with 31.
Bring next digit (7) of the dividend behind the 31 and repeat the process: 317 / 72

Going ahead to step 4:
72 can be fit into 317 4 times, resulting in a remainder of 29.
Use 4 as the next digit of our solution. 
Result so far: 54.0
Subtracting 288 from 317 leaves us with 29.
Append the next digit (1) from the dividend to 29 and continue with: 291 / 72

Advancing to step 5:
72 can be fit into 291 4 times, resulting in a remainder of 3.
Record the quotient 4 as the next digit in the result. 
Result so far: 544.0
The remainder is 3 after subtracting 288 from 291.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

Step 6:
72 can be fit into 30 0 times, resulting in a remainder of 30.
Put 0 as the next digit of the answer. 
Result so far: 544.0
Deduct 0 from 30 and we're left with 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

Step 7:
When dividing 300 by 72, we get 4 with a remainder of 12.
Write down 4 as next digit of the result. 
Result so far: 544.04
Subtract 288 from 300 to get 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

Moving on to step 8:
120 divided by 72 is 1 with a remainder of 48.
The next digit of our result is 1. 
Result so far: 544.041
If we subtract 72 from 120, we get 48.
Since there are no more digits in the dividend, we add a zero to the remainder making it 480, and continue the process.

Advancing to step 9:
72 goes into 480 6 times with a remainder of 48.
Put 6 as the next digit of the answer. 
Result so far: 544.0416
If we subtract 432 from 480, we get 48.
Since there are no more digits in the dividend, we add a zero to the remainder making it 480, and continue the process.

On to step 10:
When dividing 480 by 72, we get 6 with a remainder of 48.
Use 6 as the next digit of our solution. 
Result so far: 544.04166
Deduct 432 from 480 and we're left with 48.
Since there are no more digits in the dividend, we add a zero to the remainder making it 480, and continue the process.

The final outcome is 544.04166, with a leftover of 4.8e-05.