684246 divided by 13 
The aim is to understand the frequency of 13 in 684246.

Step 1:
The number 13 fits into 6 0 times, leaving a remainder of 6.
The next digit of our result is 0. 
Result so far: 0.0
Subtracting 0 from 6 leaves us with 6.
Grab the next digit (8) from the dividend, add it to 6, then carry on: 68 / 13

Step 2:
68 divided by 13 is 5 with a remainder of 3.
Use 5 as the next digit of our solution. 
Result so far: 5.0
The remainder is 3 after subtracting 65 from 68.
Grab the next digit (4) from the dividend, add it to 3, then carry on: 34 / 13

Let's proceed to step 3:
13 can be fit into 34 2 times, resulting in a remainder of 8.
The next digit of our result is 2. 
Result so far: 52.0
Subtract 26 from 34 to get 8.
Fetch the next digit (2) from the dividend, attach it to 8 and continue: 82 / 13

On to step 4:
13 goes into 82 6 times with a remainder of 4.
The next digit of our result is 6. 
Result so far: 526.0
Subtract 78 from 82 to get 4.
Fetch the next digit (4) from the dividend, attach it to 4 and continue: 44 / 13

Moving on to step 5:
13 can be fit into 44 3 times, resulting in a remainder of 5.
Put 3 as the next digit of the answer. 
Result so far: 5263.0
If we subtract 39 from 44, we get 5.
Grab the next digit (6) from the dividend, add it to 5, then carry on: 56 / 13

Advancing to step 6:
13 can be fit into 56 4 times, resulting in a remainder of 4.
The number 4 becomes the next digit in our result. 
Result so far: 52634.0
Subtract 52 from 56 to get 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 7:
If we divide 40 by 13, we get 3 and a remainder of 1.
The number 3 becomes the next digit in our result. 
Result so far: 52634.3
Subtract 39 from 40 to get 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

Let's proceed to step 8:
10 divided by 13 is 0 with a remainder of 10.
The number 0 becomes the next digit in our result. 
Result so far: 52634.3
Subtracting 0 from 10 leaves us with 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Advancing to step 9:
13 can be fit into 100 7 times, resulting in a remainder of 9.
Write down 7 as next digit of the result. 
Result so far: 52634.307
Deduct 91 from 100 and we're left with 9.
Since there are no more digits in the dividend, we add a zero to the remainder making it 90, and continue the process.

Advancing to step 10:
If we divide 90 by 13, we get 6 and a remainder of 12.
The number 6 becomes the next digit in our result. 
Result so far: 52634.3076
Subtracting 78 from 90 leaves us with 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:
13 can be fit into 120 9 times, resulting in a remainder of 3.
The next digit of our result is 9. 
Result so far: 52634.30769
If we subtract 117 from 120, we 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.

On to step 12:
When dividing 30 by 13, we get 2 with a remainder of 4.
Put 2 as the next digit of the answer. 
Result so far: 52634.307692
Subtract 26 from 30 to get 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Moving on to step 13:
When dividing 40 by 13, we get 3 with a remainder of 1.
The next digit of our result is 3. 
Result so far: 52634.3076923
Subtracting 39 from 40 leaves us 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.

On to step 14:
If we divide 10 by 13, we get 0 and a remainder of 10.
The next digit of our result is 0. 
Result so far: 52634.3076923
Subtract 0 from 10 to 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.

The final outcome is 52634.3076923, with a leftover of 1e-08.