969398 divided by 13 
The aim is to understand the frequency of 13 in 969398.

Going ahead to step 1:
9 divided by 13 is 0 with a remainder of 9.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtract 0 from 9 to get 9.
Include the next digit (6) from the dividend after 9, then repeat: 96 / 13

Moving on to step 2:
13 can be fit into 96 7 times, resulting in a remainder of 5.
Write down 7 as next digit of the result. 
Result so far: 7.0
Deduct 91 from 96 and we're left with 5.
Append the next digit (9) from the dividend to 5 and continue with: 59 / 13

Going ahead to step 3:
59 divided by 13 is 4 with a remainder of 7.
The number 4 becomes the next digit in our result. 
Result so far: 74.0
If we subtract 52 from 59, we get 7.
Grab the next digit (3) from the dividend, add it to 7, then carry on: 73 / 13

Going ahead to step 4:
The number 13 fits into 73 5 times, leaving a remainder of 8.
The next digit of our result is 5. 
Result so far: 745.0
Subtracting 65 from 73 leaves us with 8.
Take the next digit (9) from the dividend and append it to 8, then repeat: 89 / 13

Let's proceed to step 5:
89 divided by 13 is 6 with a remainder of 11.
The next digit of our result is 6. 
Result so far: 7456.0
If we subtract 78 from 89, we get 11.
Include the next digit (8) from the dividend after 11, then repeat: 118 / 13

Advancing to step 6:
13 goes into 118 9 times with a remainder of 1.
Write down 9 as next digit of the result. 
Result so far: 74569.0
Subtracting 117 from 118 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.

Step 7:
10 divided by 13 is 0 with a remainder of 10.
Put 0 as the next digit of the answer. 
Result so far: 74569.0
If we subtract 0 from 10, we 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.

Step 8:
100 divided by 13 is 7 with a remainder of 9.
The next digit of our result is 7. 
Result so far: 74569.07
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 9:
90 divided by 13 is 6 with a remainder of 12.
Put 6 as the next digit of the answer. 
Result so far: 74569.076
Deduct 78 from 90 and we're left with 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

Going ahead to step 10:
When dividing 120 by 13, we get 9 with a remainder of 3.
The number 9 becomes the next digit in our result. 
Result so far: 74569.0769
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.

Moving on to step 11:
If we divide 30 by 13, we get 2 and a remainder of 4.
Put 2 as the next digit of the answer. 
Result so far: 74569.07692
Subtract 26 from 30 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.

Moving on to step 12:
13 goes into 40 3 times with a remainder of 1.
Write down 3 as next digit of the result. 
Result so far: 74569.076923
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 13:
When dividing 10 by 13, we get 0 with a remainder of 10.
Put 0 as the next digit of the answer. 
Result so far: 74569.076923
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.

Let's proceed to step 14:
If we divide 100 by 13, we get 7 and a remainder of 9.
Record the quotient 7 as the next digit in the result. 
Result so far: 74569.07692307
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.

Our division results in 74569.07692307 with a remaining 9e-09.