We look at the division of 908616 by 13 
The aim is to understand the frequency of 13 in 908616.

On to step 1:
The number 13 fits into 9 0 times, leaving a remainder of 9.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtracting 0 from 9 leaves us with 9.
Append the next digit (0) from the dividend to 9 and continue with: 90 / 13

Let's proceed to step 2:
When dividing 90 by 13, we get 6 with a remainder of 12.
Write down 6 as next digit of the result. 
Result so far: 6.0
If we take 78 away from 90, we end up with 12.
Fetch the next digit (8) from the dividend, attach it to 12 and continue: 128 / 13

Step 3:
When dividing 128 by 13, we get 9 with a remainder of 11.
Use 9 as the next digit of our solution. 
Result so far: 69.0
The remainder is 11 after subtracting 117 from 128.
Append the next digit (6) from the dividend to 11 and continue with: 116 / 13

Going ahead to step 4:
The number 13 fits into 116 8 times, leaving a remainder of 12.
Put 8 as the next digit of the answer. 
Result so far: 698.0
The remainder is 12 after subtracting 104 from 116.
Fetch the next digit (1) from the dividend, attach it to 12 and continue: 121 / 13

Going ahead to step 5:
When dividing 121 by 13, we get 9 with a remainder of 4.
Put 9 as the next digit of the answer. 
Result so far: 6989.0
Subtract 117 from 121 to get 4.
Include the next digit (6) from the dividend after 4, then repeat: 46 / 13

Advancing to step 6:
13 can be fit into 46 3 times, resulting in a remainder of 7.
Record the quotient 3 as the next digit in the result. 
Result so far: 69893.0
The remainder is 7 after subtracting 39 from 46.
Since there are no more digits in the dividend, we add a zero to the remainder making it 70, and continue the process.

On to step 7:
If we divide 70 by 13, we get 5 and a remainder of 5.
Use 5 as the next digit of our solution. 
Result so far: 69893.5
If we take 65 away from 70, we end up with 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

On to step 8:
When dividing 50 by 13, we get 3 with a remainder of 11.
The next digit of our result is 3. 
Result so far: 69893.53
Subtracting 39 from 50 leaves us with 11.
Since there are no more digits in the dividend, we add a zero to the remainder making it 110, and continue the process.

Step 9:
110 divided by 13 is 8 with a remainder of 6.
Record the quotient 8 as the next digit in the result. 
Result so far: 69893.538
Subtract 104 from 110 to get 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Step 10:
When dividing 60 by 13, we get 4 with a remainder of 8.
Use 4 as the next digit of our solution. 
Result so far: 69893.5384
Subtracting 52 from 60 leaves us with 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

On to step 11:
80 divided by 13 is 6 with a remainder of 2.
Use 6 as the next digit of our solution. 
Result so far: 69893.53846
Subtracting 78 from 80 leaves us with 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

On to step 12:
If we divide 20 by 13, we get 1 and a remainder of 7.
Record the quotient 1 as the next digit in the result. 
Result so far: 69893.538461
Subtracting 13 from 20 leaves us with 7.
Since there are no more digits in the dividend, we add a zero to the remainder making it 70, and continue the process.

Moving on to step 13:
When dividing 70 by 13, we get 5 with a remainder of 5.
Put 5 as the next digit of the answer. 
Result so far: 69893.5384615
If we take 65 away from 70, we end up with 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Moving on to step 14:
When dividing 50 by 13, we get 3 with a remainder of 11.
Use 3 as the next digit of our solution. 
Result so far: 69893.53846153
If we subtract 39 from 50, we get 11.
Since there are no more digits in the dividend, we add a zero to the remainder making it 110, and continue the process.

The quotient of the division is 69893.53846153, and the remainder is 1.1e-08.