500431 divided by 39 
The aim is to understand the frequency of 39 in 500431.

Advancing to step 1:
39 goes into 5 0 times with a remainder of 5.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we subtract 0 from 5, we get 5.
Append the next digit (0) from the dividend to 5 and continue with: 50 / 39

Let's proceed to step 2:
39 goes into 50 1 times with a remainder of 11.
The next digit of our result is 1. 
Result so far: 1.0
If we subtract 39 from 50, we get 11.
Include the next digit (0) from the dividend after 11, then repeat: 110 / 39

Moving on to step 3:
39 goes into 110 2 times with a remainder of 32.
Record the quotient 2 as the next digit in the result. 
Result so far: 12.0
If we subtract 78 from 110, we get 32.
Append the next digit (4) from the dividend to 32 and continue with: 324 / 39

Advancing to step 4:
If we divide 324 by 39, we get 8 and a remainder of 12.
Use 8 as the next digit of our solution. 
Result so far: 128.0
The remainder is 12 after subtracting 312 from 324.
Fetch the next digit (3) from the dividend, attach it to 12 and continue: 123 / 39

On to step 5:
123 divided by 39 is 3 with a remainder of 6.
Write down 3 as next digit of the result. 
Result so far: 1283.0
Subtract 117 from 123 to get 6.
Fetch the next digit (1) from the dividend, attach it to 6 and continue: 61 / 39

Advancing to step 6:
The number 39 fits into 61 1 times, leaving a remainder of 22.
Write down 1 as next digit of the result. 
Result so far: 12831.0
Subtracting 39 from 61 leaves us with 22.
Since there are no more digits in the dividend, we add a zero to the remainder making it 220, and continue the process.

Step 7:
39 can be fit into 220 5 times, resulting in a remainder of 25.
The next digit of our result is 5. 
Result so far: 12831.5
Deduct 195 from 220 and we're left with 25.
Since there are no more digits in the dividend, we add a zero to the remainder making it 250, and continue the process.

Moving on to step 8:
If we divide 250 by 39, we get 6 and a remainder of 16.
The next digit of our result is 6. 
Result so far: 12831.56
The remainder is 16 after subtracting 234 from 250.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

Advancing to step 9:
The number 39 fits into 160 4 times, leaving a remainder of 4.
Record the quotient 4 as the next digit in the result. 
Result so far: 12831.564
If we take 156 away from 160, we end up with 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Advancing to step 10:
39 can be fit into 40 1 times, resulting in a remainder of 1.
The next digit of our result is 1. 
Result so far: 12831.5641
Subtracting 39 from 40 leaves us with 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

Advancing to step 11:
If we divide 10 by 39, we get 0 and a remainder of 10.
The number 0 becomes the next digit in our result. 
Result so far: 12831.5641
Deduct 0 from 10 and we're left with 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Step 12:
The number 39 fits into 100 2 times, leaving a remainder of 22.
Write down 2 as next digit of the result. 
Result so far: 12831.564102
Subtracting 78 from 100 leaves us with 22.
Since there are no more digits in the dividend, we add a zero to the remainder making it 220, and continue the process.

Advancing to step 13:
39 goes into 220 5 times with a remainder of 25.
The number 5 becomes the next digit in our result. 
Result so far: 12831.5641025
The remainder is 25 after subtracting 195 from 220.
Since there are no more digits in the dividend, we add a zero to the remainder making it 250, and continue the process.

On to step 14:
When dividing 250 by 39, we get 6 with a remainder of 16.
Record the quotient 6 as the next digit in the result. 
Result so far: 12831.56410256
If we take 234 away from 250, we end up with 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

The final result is 12831.56410256 with a remainder of 1.6e-08.