We're dividing 729860 by 13 
The aim is to understand the frequency of 13 in 729860.

Step 1:
13 goes into 7 0 times with a remainder of 7.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 7 after subtracting 0 from 7.
Append the next digit (2) from the dividend to 7 and continue with: 72 / 13

Going ahead to step 2:
13 goes into 72 5 times with a remainder of 7.
The next digit of our result is 5. 
Result so far: 5.0
If we subtract 65 from 72, we get 7.
Append the next digit (9) from the dividend to 7 and continue with: 79 / 13

Advancing to step 3:
The number 13 fits into 79 6 times, leaving a remainder of 1.
The number 6 becomes the next digit in our result. 
Result so far: 56.0
Deduct 78 from 79 and we're left with 1.
Take the next digit (8) from the dividend and append it to 1, then repeat: 18 / 13

Advancing to step 4:
The number 13 fits into 18 1 times, leaving a remainder of 5.
Use 1 as the next digit of our solution. 
Result so far: 561.0
If we subtract 13 from 18, we get 5.
Take the next digit (6) from the dividend and append it to 5, then repeat: 56 / 13

Moving on to step 5:
13 goes into 56 4 times with a remainder of 4.
Use 4 as the next digit of our solution. 
Result so far: 5614.0
The remainder is 4 after subtracting 52 from 56.
Include the next digit (0) from the dividend after 4, then repeat: 40 / 13

Step 6:
The number 13 fits into 40 3 times, leaving a remainder of 1.
Record the quotient 3 as the next digit in the result. 
Result so far: 56143.0
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.

On to step 7:
13 goes into 10 0 times with a remainder of 10.
The next digit of our result is 0. 
Result so far: 56143.0
Deduct 0 from 10 and we're left 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.

Going ahead to step 8:
100 divided by 13 is 7 with a remainder of 9.
The next digit of our result is 7. 
Result so far: 56143.07
If we subtract 91 from 100, we get 9.
Since there are no more digits in the dividend, we add a zero to the remainder making it 90, and continue the process.

Moving on to step 9:
90 divided by 13 is 6 with a remainder of 12.
Use 6 as the next digit of our solution. 
Result so far: 56143.076
The remainder is 12 after subtracting 78 from 90.
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 10:
120 divided by 13 is 9 with a remainder of 3.
The number 9 becomes the next digit in our result. 
Result so far: 56143.0769
Subtracting 117 from 120 leaves us with 3.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

Let's proceed to step 11:
13 can be fit into 30 2 times, resulting in a remainder of 4.
The number 2 becomes the next digit in our result. 
Result so far: 56143.07692
Deduct 26 from 30 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 12:
13 can be fit into 40 3 times, resulting in a remainder of 1.
Record the quotient 3 as the next digit in the result. 
Result so far: 56143.076923
The remainder is 1 after subtracting 39 from 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

Step 13:
If we divide 10 by 13, we get 0 and a remainder of 10.
The number 0 becomes the next digit in our result. 
Result so far: 56143.076923
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.

Step 14:
100 divided by 13 is 7 with a remainder of 9.
Use 7 as the next digit of our solution. 
Result so far: 56143.07692307
Subtracting 91 from 100 leaves us 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.

Our division results in 56143.07692307 with a remaining 9e-09.