We look at the division of 860492 by 13 
The aim is to understand the frequency of 13 in 860492.

Let's proceed to step 1:
When dividing 8 by 13, we get 0 with a remainder of 8.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 8, we end up with 8.
Take the next digit (6) from the dividend and append it to 8, then repeat: 86 / 13

On to step 2:
13 can be fit into 86 6 times, resulting in a remainder of 8.
Put 6 as the next digit of the answer. 
Result so far: 6.0
If we subtract 78 from 86, we get 8.
Take the next digit (0) from the dividend and append it to 8, then repeat: 80 / 13

Step 3:
13 goes into 80 6 times with a remainder of 2.
Write down 6 as next digit of the result. 
Result so far: 66.0
Subtract 78 from 80 to get 2.
Take the next digit (4) from the dividend and append it to 2, then repeat: 24 / 13

On to step 4:
24 divided by 13 is 1 with a remainder of 11.
Write down 1 as next digit of the result. 
Result so far: 661.0
Deduct 13 from 24 and we're left with 11.
Grab the next digit (9) from the dividend, add it to 11, then carry on: 119 / 13

On to step 5:
13 goes into 119 9 times with a remainder of 2.
Use 9 as the next digit of our solution. 
Result so far: 6619.0
Subtracting 117 from 119 leaves us with 2.
Bring next digit (2) of the dividend behind the 2 and repeat the process: 22 / 13

On to step 6:
If we divide 22 by 13, we get 1 and a remainder of 9.
Use 1 as the next digit of our solution. 
Result so far: 66191.0
If we take 13 away from 22, we end up 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.

Let's proceed to step 7:
13 goes into 90 6 times with a remainder of 12.
Put 6 as the next digit of the answer. 
Result so far: 66191.6
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.

Let's proceed to step 8:
120 divided by 13 is 9 with a remainder of 3.
Record the quotient 9 as the next digit in the result. 
Result so far: 66191.69
Deduct 117 from 120 and we're left with 3.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

On to step 9:
If we divide 30 by 13, we get 2 and a remainder of 4.
The next digit of our result is 2. 
Result so far: 66191.692
If we take 26 away from 30, 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:
13 can be fit into 40 3 times, resulting in a remainder of 1.
Record the quotient 3 as the next digit in the result. 
Result so far: 66191.6923
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.

Going ahead to step 11:
10 divided by 13 is 0 with a remainder of 10.
Record the quotient 0 as the next digit in the result. 
Result so far: 66191.6923
Subtract 0 from 10 to get 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Moving on to step 12:
The number 13 fits into 100 7 times, leaving a remainder of 9.
Use 7 as the next digit of our solution. 
Result so far: 66191.692307
If we take 91 away from 100, we end up 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 13:
When dividing 90 by 13, we get 6 with a remainder of 12.
The number 6 becomes the next digit in our result. 
Result so far: 66191.6923076
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.

Step 14:
13 goes into 120 9 times with a remainder of 3.
Record the quotient 9 as the next digit in the result. 
Result so far: 66191.69230769
Subtract 117 from 120 to get 3.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

The final outcome is 66191.69230769, with a leftover of 3e-09.