724546 ÷ 13 
The aim is to understand the frequency of 13 in 724546.

Going ahead to step 1:
If we divide 7 by 13, we get 0 and a remainder of 7.
The next digit of our result is 0. 
Result so far: 0.0
The remainder is 7 after subtracting 0 from 7.
Include the next digit (2) from the dividend after 7, then repeat: 72 / 13

Advancing to step 2:
If we divide 72 by 13, we get 5 and a remainder of 7.
Put 5 as the next digit of the answer. 
Result so far: 5.0
If we take 65 away from 72, we end up with 7.
Take the next digit (4) from the dividend and append it to 7, then repeat: 74 / 13

Step 3:
13 goes into 74 5 times with a remainder of 9.
The next digit of our result is 5. 
Result so far: 55.0
If we subtract 65 from 74, we get 9.
Fetch the next digit (5) from the dividend, attach it to 9 and continue: 95 / 13

Let's proceed to step 4:
If we divide 95 by 13, we get 7 and a remainder of 4.
Write down 7 as next digit of the result. 
Result so far: 557.0
Subtracting 91 from 95 leaves us with 4.
Grab the next digit (4) from the dividend, add it to 4, then carry on: 44 / 13

Step 5:
When dividing 44 by 13, we get 3 with a remainder of 5.
The number 3 becomes the next digit in our result. 
Result so far: 5573.0
If we take 39 away from 44, we end up with 5.
Include the next digit (6) from the dividend after 5, then repeat: 56 / 13

On 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: 55734.0
Deduct 52 from 56 and we're left 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.

On to step 7:
13 goes into 40 3 times with a remainder of 1.
Put 3 as the next digit of the answer. 
Result so far: 55734.3
If we subtract 39 from 40, we 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.

Going ahead to step 8:
When dividing 10 by 13, we get 0 with a remainder of 10.
Put 0 as the next digit of the answer. 
Result so far: 55734.3
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.

Moving on to step 9:
The number 13 fits into 100 7 times, leaving a remainder of 9.
Use 7 as the next digit of our solution. 
Result so far: 55734.307
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.

Going ahead to step 10:
13 goes into 90 6 times with a remainder of 12.
Put 6 as the next digit of the answer. 
Result so far: 55734.3076
Deduct 78 from 90 and we're left 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.

Step 11:
13 can be fit into 120 9 times, resulting in a remainder of 3.
Put 9 as the next digit of the answer. 
Result so far: 55734.30769
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.

Step 12:
13 can be fit into 30 2 times, resulting in a remainder of 4.
Use 2 as the next digit of our solution. 
Result so far: 55734.307692
If we subtract 26 from 30, we 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.

Step 13:
13 goes into 40 3 times with a remainder of 1.
Record the quotient 3 as the next digit in the result. 
Result so far: 55734.3076923
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.

Moving on to step 14:
10 divided by 13 is 0 with a remainder of 10.
Use 0 as the next digit of our solution. 
Result so far: 55734.3076923
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.

The final result is 55734.3076923 with a remainder of 1e-08.