We're dividing 8908736 by 13 
The aim is to understand the frequency of 13 in 8908736.

Let's proceed to step 1:
When dividing 8 by 13, we get 0 with a remainder of 8.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 8, we get 8.
Take the next digit (9) from the dividend and append it to 8, then repeat: 89 / 13

Step 2:
89 divided by 13 is 6 with a remainder of 11.
The number 6 becomes the next digit in our result. 
Result so far: 6.0
Deduct 78 from 89 and we're left with 11.
Append the next digit (0) from the dividend to 11 and continue with: 110 / 13

Going ahead to step 3:
If we divide 110 by 13, we get 8 and a remainder of 6.
The next digit of our result is 8. 
Result so far: 68.0
Subtract 104 from 110 to get 6.
Bring next digit (8) of the dividend behind the 6 and repeat the process: 68 / 13

Advancing to step 4:
If we divide 68 by 13, we get 5 and a remainder of 3.
Write down 5 as next digit of the result. 
Result so far: 685.0
If we subtract 65 from 68, we get 3.
Include the next digit (7) from the dividend after 3, then repeat: 37 / 13

Going ahead to step 5:
The number 13 fits into 37 2 times, leaving a remainder of 11.
Put 2 as the next digit of the answer. 
Result so far: 6852.0
If we take 26 away from 37, we end up with 11.
Fetch the next digit (3) from the dividend, attach it to 11 and continue: 113 / 13

Step 6:
When dividing 113 by 13, we get 8 with a remainder of 9.
Put 8 as the next digit of the answer. 
Result so far: 68528.0
If we take 104 away from 113, we end up with 9.
Fetch the next digit (6) from the dividend, attach it to 9 and continue: 96 / 13

Advancing to step 7:
The number 13 fits into 96 7 times, leaving a remainder of 5.
Write down 7 as next digit of the result. 
Result so far: 685287.0
Subtract 91 from 96 to get 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Let's proceed to step 8:
13 goes into 50 3 times with a remainder of 11.
The next digit of our result is 3. 
Result so far: 685287.3
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.

Advancing to step 9:
If we divide 110 by 13, we get 8 and a remainder of 6.
Put 8 as the next digit of the answer. 
Result so far: 685287.38
Deduct 104 from 110 and we're left with 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Going ahead to step 10:
13 goes into 60 4 times with a remainder of 8.
Record the quotient 4 as the next digit in the result. 
Result so far: 685287.384
If we subtract 52 from 60, we get 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Step 11:
The number 13 fits into 80 6 times, leaving a remainder of 2.
Use 6 as the next digit of our solution. 
Result so far: 685287.3846
Deduct 78 from 80 and we're left 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.

Going ahead to step 12:
13 goes into 20 1 times with a remainder of 7.
Write down 1 as next digit of the result. 
Result so far: 685287.38461
Subtract 13 from 20 to get 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.
Record the quotient 5 as the next digit in the result. 
Result so far: 685287.384615
Subtract 65 from 70 to get 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Let's proceed to step 14:
13 can be fit into 50 3 times, resulting in a remainder of 11.
Write down 3 as next digit of the result. 
Result so far: 685287.3846153
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.

On to step 15:
If we divide 110 by 13, we get 8 and a remainder of 6.
Put 8 as the next digit of the answer. 
Result so far: 685287.38461538
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.

The final result is 685287.38461538 with a remainder of 6e-09.