Let's divide 781928 by 13
The aim is to understand the frequency of 13 in 781928.

On to step 1:
13 can be fit into 7 0 times, resulting in a remainder of 7.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 7, we get 7.
Fetch the next digit (8) from the dividend, attach it to 7 and continue: 78 / 13

Step 2:
13 can be fit into 78 6 times, resulting in a remainder of 0.
The number 6 becomes the next digit in our result. 
Result so far: 6.0
Subtract 78 from 78 to get 0.
Append the next digit (1) from the dividend to 0 and continue with: 1 / 13

Moving on to step 3:
13 can be fit into 1 0 times, resulting in a remainder of 1.
Put 0 as the next digit of the answer. 
Result so far: 60.0
Deduct 0 from 1 and we're left with 1.
Take the next digit (9) from the dividend and append it to 1, then repeat: 19 / 13

Advancing to step 4:
13 goes into 19 1 times with a remainder of 6.
Use 1 as the next digit of our solution. 
Result so far: 601.0
Subtract 13 from 19 to get 6.
Fetch the next digit (2) from the dividend, attach it to 6 and continue: 62 / 13

On to step 5:
62 divided by 13 is 4 with a remainder of 10.
The next digit of our result is 4. 
Result so far: 6014.0
Subtract 52 from 62 to get 10.
Include the next digit (8) from the dividend after 10, then repeat: 108 / 13

Let's proceed to step 6:
If we divide 108 by 13, we get 8 and a remainder of 4.
The number 8 becomes the next digit in our result. 
Result so far: 60148.0
Subtract 104 from 108 to get 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

On to step 7:
13 can be fit into 40 3 times, resulting in a remainder of 1.
The number 3 becomes the next digit in our result. 
Result so far: 60148.3
If we take 39 away from 40, we end up 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.

Let's proceed to step 8:
13 goes into 10 0 times with a remainder of 10.
The next digit of our result is 0. 
Result so far: 60148.3
The remainder is 10 after subtracting 0 from 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

On to step 9:
100 divided by 13 is 7 with a remainder of 9.
Write down 7 as next digit of the result. 
Result so far: 60148.307
Subtracting 91 from 100 leaves us with 9.
Since there are no more digits in the dividend, we add a zero to the remainder making it 90, and continue the process.

Advancing to step 10:
The number 13 fits into 90 6 times, leaving a remainder of 12.
Put 6 as the next digit of the answer. 
Result so far: 60148.3076
If we subtract 78 from 90, we 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.

On to step 11:
When dividing 120 by 13, we get 9 with a remainder of 3.
The next digit of our result is 9. 
Result so far: 60148.30769
The remainder is 3 after subtracting 117 from 120.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

Let's proceed to step 12:
30 divided by 13 is 2 with a remainder of 4.
Record the quotient 2 as the next digit in the result. 
Result so far: 60148.307692
The remainder is 4 after subtracting 26 from 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Moving on to step 13:
13 goes into 40 3 times with a remainder of 1.
The number 3 becomes the next digit in our result. 
Result so far: 60148.3076923
Deduct 39 from 40 and we're left 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.

On to step 14:
13 goes into 10 0 times with a remainder of 10.
The next digit of our result is 0. 
Result so far: 60148.3076923
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.

The final result is 60148.3076923 with a remainder of 1e-08.