512575 ÷ 39 
We're looking to find how many times 39 goes into 512575.

On to step 1:
39 goes into 5 0 times with a remainder of 5.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we take 0 away from 5, we end up with 5.
Append the next digit (1) from the dividend to 5 and continue with: 51 / 39

Let's proceed to step 2:
39 goes into 51 1 times with a remainder of 12.
Use 1 as the next digit of our solution. 
Result so far: 1.0
If we take 39 away from 51, we end up with 12.
Append the next digit (2) from the dividend to 12 and continue with: 122 / 39

Let's proceed to step 3:
When dividing 122 by 39, we get 3 with a remainder of 5.
Use 3 as the next digit of our solution. 
Result so far: 13.0
If we take 117 away from 122, we end up with 5.
Include the next digit (5) from the dividend after 5, then repeat: 55 / 39

Step 4:
55 divided by 39 is 1 with a remainder of 16.
Record the quotient 1 as the next digit in the result. 
Result so far: 131.0
If we take 39 away from 55, we end up with 16.
Bring next digit (7) of the dividend behind the 16 and repeat the process: 167 / 39

Advancing to step 5:
When dividing 167 by 39, we get 4 with a remainder of 11.
Record the quotient 4 as the next digit in the result. 
Result so far: 1314.0
Subtracting 156 from 167 leaves us with 11.
Fetch the next digit (5) from the dividend, attach it to 11 and continue: 115 / 39

Moving on to step 6:
115 divided by 39 is 2 with a remainder of 37.
The next digit of our result is 2. 
Result so far: 13142.0
Subtract 78 from 115 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 7:
370 divided by 39 is 9 with a remainder of 19.
The number 9 becomes the next digit in our result. 
Result so far: 13142.9
Subtracting 351 from 370 leaves us 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 8:
39 can be fit into 190 4 times, resulting in a remainder of 34.
Write down 4 as next digit of the result. 
Result so far: 13142.94
Deduct 156 from 190 and we're left with 34.
Since there are no more digits in the dividend, we add a zero to the remainder making it 340, and continue the process.

Let's proceed to step 9:
340 divided by 39 is 8 with a remainder of 28.
Record the quotient 8 as the next digit in the result. 
Result so far: 13142.948
If we subtract 312 from 340, we 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.

Moving on to step 10:
If we divide 280 by 39, we get 7 and a remainder of 7.
The next digit of our result is 7. 
Result so far: 13142.9487
Deduct 273 from 280 and we're left with 7.
Since there are no more digits in the dividend, we add a zero to the remainder making it 70, and continue the process.

Going ahead to step 11:
39 goes into 70 1 times with a remainder of 31.
Write down 1 as next digit of the result. 
Result so far: 13142.94871
Subtract 39 from 70 to get 31.
Since there are no more digits in the dividend, we add a zero to the remainder making it 310, and continue the process.

Moving on to step 12:
39 goes into 310 7 times with a remainder of 37.
The next digit of our result is 7. 
Result so far: 13142.948717
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.

On to step 13:
39 can be fit into 370 9 times, resulting in a remainder of 19.
Write down 9 as next digit of the result. 
Result so far: 13142.9487179
If we subtract 351 from 370, we get 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 14:
When dividing 190 by 39, we get 4 with a remainder of 34.
The next digit of our result is 4. 
Result so far: 13142.94871794
If we subtract 156 from 190, we 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.

The final outcome is 13142.94871794, with a leftover of 3.4e-08.