We're dividing 691203 by 13 
The aim is to understand the frequency of 13 in 691203.

On to step 1:
13 can be fit into 6 0 times, resulting in a remainder of 6.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 6 leaves us with 6.
Include the next digit (9) from the dividend after 6, then repeat: 69 / 13

Advancing to step 2:
When dividing 69 by 13, we get 5 with a remainder of 4.
The number 5 becomes the next digit in our result. 
Result so far: 5.0
Subtracting 65 from 69 leaves us with 4.
Fetch the next digit (1) from the dividend, attach it to 4 and continue: 41 / 13

Let's proceed to step 3:
The number 13 fits into 41 3 times, leaving a remainder of 2.
Put 3 as the next digit of the answer. 
Result so far: 53.0
Subtract 39 from 41 to get 2.
Fetch the next digit (2) from the dividend, attach it to 2 and continue: 22 / 13

Let's proceed to step 4:
The number 13 fits into 22 1 times, leaving a remainder of 9.
Write down 1 as next digit of the result. 
Result so far: 531.0
Deduct 13 from 22 and we're left with 9.
Append the next digit (0) from the dividend to 9 and continue with: 90 / 13

On to step 5:
When dividing 90 by 13, we get 6 with a remainder of 12.
Put 6 as the next digit of the answer. 
Result so far: 5316.0
If we subtract 78 from 90, we get 12.
Take the next digit (3) from the dividend and append it to 12, then repeat: 123 / 13

Going ahead to step 6:
When dividing 123 by 13, we get 9 with a remainder of 6.
The number 9 becomes the next digit in our result. 
Result so far: 53169.0
If we take 117 away from 123, we end up 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 7:
13 can be fit into 60 4 times, resulting in a remainder of 8.
Record the quotient 4 as the next digit in the result. 
Result so far: 53169.4
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.

Step 8:
The number 13 fits into 80 6 times, leaving a remainder of 2.
The next digit of our result is 6. 
Result so far: 53169.46
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.

Advancing to step 9:
The number 13 fits into 20 1 times, leaving a remainder of 7.
Record the quotient 1 as the next digit in the result. 
Result so far: 53169.461
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.

Let's proceed to step 10:
The number 13 fits into 70 5 times, leaving a remainder of 5.
Put 5 as the next digit of the answer. 
Result so far: 53169.4615
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.

Step 11:
When dividing 50 by 13, we get 3 with a remainder of 11.
The next digit of our result is 3. 
Result so far: 53169.46153
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.

Let's proceed to step 12:
If we divide 110 by 13, we get 8 and a remainder of 6.
Record the quotient 8 as the next digit in the result. 
Result so far: 53169.461538
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.

Let's proceed to step 13:
13 goes into 60 4 times with a remainder of 8.
The number 4 becomes the next digit in our result. 
Result so far: 53169.4615384
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.

Moving on to step 14:
The number 13 fits into 80 6 times, leaving a remainder of 2.
The next digit of our result is 6. 
Result so far: 53169.46153846
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.

The final outcome is 53169.46153846, with a leftover of 2e-09.