907209 ÷ 13 
The aim is to understand the frequency of 13 in 907209.

Step 1:
13 goes into 9 0 times with a remainder of 9.
The next digit of our result is 0. 
Result so far: 0.0
Subtract 0 from 9 to get 9.
Bring next digit (0) of the dividend behind the 9 and repeat the process: 90 / 13

On to step 2:
If we divide 90 by 13, we get 6 and a remainder of 12.
Put 6 as the next digit of the answer. 
Result so far: 6.0
If we take 78 away from 90, we end up with 12.
Include the next digit (7) from the dividend after 12, then repeat: 127 / 13

On to step 3:
The number 13 fits into 127 9 times, leaving a remainder of 10.
Record the quotient 9 as the next digit in the result. 
Result so far: 69.0
Deduct 117 from 127 and we're left with 10.
Include the next digit (2) from the dividend after 10, then repeat: 102 / 13

Let's proceed to step 4:
13 can be fit into 102 7 times, resulting in a remainder of 11.
The number 7 becomes the next digit in our result. 
Result so far: 697.0
If we subtract 91 from 102, we get 11.
Bring next digit (0) of the dividend behind the 11 and repeat the process: 110 / 13

Going ahead to step 5:
110 divided by 13 is 8 with a remainder of 6.
Put 8 as the next digit of the answer. 
Result so far: 6978.0
Subtracting 104 from 110 leaves us with 6.
Bring next digit (9) of the dividend behind the 6 and repeat the process: 69 / 13

On to step 6:
If we divide 69 by 13, we get 5 and a remainder of 4.
Use 5 as the next digit of our solution. 
Result so far: 69785.0
The remainder is 4 after subtracting 65 from 69.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Step 7:
The number 13 fits into 40 3 times, leaving a remainder of 1.
Use 3 as the next digit of our solution. 
Result so far: 69785.3
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.

Advancing to step 8:
10 divided by 13 is 0 with a remainder of 10.
Use 0 as the next digit of our solution. 
Result so far: 69785.3
The remainder is 10 after subtracting 0 from 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 9:
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: 69785.307
The remainder is 9 after subtracting 91 from 100.
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 10:
90 divided by 13 is 6 with a remainder of 12.
Use 6 as the next digit of our solution. 
Result so far: 69785.3076
Subtract 78 from 90 to 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.

On to step 11:
When dividing 120 by 13, we get 9 with a remainder of 3.
Record the quotient 9 as the next digit in the result. 
Result so far: 69785.30769
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.

Going ahead to step 12:
13 can be fit into 30 2 times, resulting in a remainder of 4.
Write down 2 as next digit of the result. 
Result so far: 69785.307692
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.

Going ahead to step 13:
13 can be fit into 40 3 times, resulting in a remainder of 1.
The number 3 becomes the next digit in our result. 
Result so far: 69785.3076923
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.

Going ahead to step 14:
10 divided by 13 is 0 with a remainder of 10.
Write down 0 as next digit of the result. 
Result so far: 69785.3076923
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.

In conclusion, the division gives 69785.3076923 with a balance of 1e-08.