We look at the division of 962858 by 13 
The aim is to understand the frequency of 13 in 962858.

On to step 1:
If we divide 9 by 13, we get 0 and a remainder of 9.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 9 to get 9.
Grab the next digit (6) from the dividend, add it to 9, then carry on: 96 / 13

Advancing to step 2:
96 divided by 13 is 7 with a remainder of 5.
Write down 7 as next digit of the result. 
Result so far: 7.0
Subtracting 91 from 96 leaves us with 5.
Fetch the next digit (2) from the dividend, attach it to 5 and continue: 52 / 13

Advancing to step 3:
The number 13 fits into 52 4 times, leaving a remainder of 0.
The number 4 becomes the next digit in our result. 
Result so far: 74.0
Subtract 52 from 52 to get 0.
Append the next digit (8) from the dividend to 0 and continue with: 8 / 13

Advancing to step 4:
13 goes into 8 0 times with a remainder of 8.
Put 0 as the next digit of the answer. 
Result so far: 740.0
If we subtract 0 from 8, we get 8.
Fetch the next digit (5) from the dividend, attach it to 8 and continue: 85 / 13

Advancing to step 5:
85 divided by 13 is 6 with a remainder of 7.
Record the quotient 6 as the next digit in the result. 
Result so far: 7406.0
If we take 78 away from 85, we end up with 7.
Include the next digit (8) from the dividend after 7, then repeat: 78 / 13

Moving on to step 6:
13 can be fit into 78 6 times, resulting in a remainder of 0.
The next digit of our result is 6. 
Result so far: 74066.0
Deduct 78 from 78 and we're left with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Advancing to step 7:
When dividing 0 by 13, we get 0 with a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 74066.0
If we take 0 away from 0, we end up with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Let's proceed to step 8:
0 divided by 13 is 0 with a remainder of 0.
The next digit of our result is 0. 
Result so far: 74066.0
Subtracting 0 from 0 leaves us with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

After the division, we end up with 74066.0 and a remainder of 0.0.