909733 divided by 13 
The aim is to understand the frequency of 13 in 909733.

On to step 1:
When dividing 9 by 13, we get 0 with a remainder of 9.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtracting 0 from 9 leaves us with 9.
Bring next digit (0) of the dividend behind the 9 and repeat the process: 90 / 13

Step 2:
The number 13 fits into 90 6 times, leaving a remainder of 12.
The number 6 becomes the next digit in our result. 
Result so far: 6.0
Deduct 78 from 90 and we're left with 12.
Include the next digit (9) from the dividend after 12, then repeat: 129 / 13

On to step 3:
13 can be fit into 129 9 times, resulting in a remainder of 12.
Record the quotient 9 as the next digit in the result. 
Result so far: 69.0
If we subtract 117 from 129, we get 12.
Bring next digit (7) of the dividend behind the 12 and repeat the process: 127 / 13

Advancing to step 4:
127 divided by 13 is 9 with a remainder of 10.
Use 9 as the next digit of our solution. 
Result so far: 699.0
Subtract 117 from 127 to get 10.
Bring next digit (3) of the dividend behind the 10 and repeat the process: 103 / 13

Let's proceed to step 5:
13 can be fit into 103 7 times, resulting in a remainder of 12.
Use 7 as the next digit of our solution. 
Result so far: 6997.0
Subtract 91 from 103 to get 12.
Bring next digit (3) of the dividend behind the 12 and repeat the process: 123 / 13

Moving on to step 6:
13 can be fit into 123 9 times, resulting in a remainder of 6.
Record the quotient 9 as the next digit in the result. 
Result so far: 69979.0
Deduct 117 from 123 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.

Advancing to step 7:
60 divided by 13 is 4 with a remainder of 8.
The next digit of our result is 4. 
Result so far: 69979.4
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.

Step 8:
When dividing 80 by 13, we get 6 with a remainder of 2.
The next digit of our result is 6. 
Result so far: 69979.46
Subtract 78 from 80 to get 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Moving on to step 9:
13 can be fit into 20 1 times, resulting in a remainder of 7.
Put 1 as the next digit of the answer. 
Result so far: 69979.461
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.

Going ahead to step 10:
If we divide 70 by 13, we get 5 and a remainder of 5.
The number 5 becomes the next digit in our result. 
Result so far: 69979.4615
If we subtract 65 from 70, we 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 11:
13 can be fit into 50 3 times, resulting in a remainder of 11.
Put 3 as the next digit of the answer. 
Result so far: 69979.46153
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 12:
The number 13 fits into 110 8 times, leaving a remainder of 6.
Use 8 as the next digit of our solution. 
Result so far: 69979.461538
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 13:
13 goes into 60 4 times with a remainder of 8.
The next digit of our result is 4. 
Result so far: 69979.4615384
Subtract 52 from 60 to 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.

On to step 14:
13 goes into 80 6 times with a remainder of 2.
The number 6 becomes the next digit in our result. 
Result so far: 69979.46153846
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.

After the division, we end up with 69979.46153846 and a remainder of 2e-09.