We look at the division of 624952 by 13 
The aim is to understand the frequency of 13 in 624952.

Going ahead to step 1:
The number 13 fits into 6 0 times, leaving a remainder of 6.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 6 and we're left with 6.
Append the next digit (2) from the dividend to 6 and continue with: 62 / 13

Going ahead to step 2:
62 divided by 13 is 4 with a remainder of 10.
Use 4 as the next digit of our solution. 
Result so far: 4.0
Deduct 52 from 62 and we're left with 10.
Fetch the next digit (4) from the dividend, attach it to 10 and continue: 104 / 13

Let's proceed to step 3:
104 divided by 13 is 8 with a remainder of 0.
Write down 8 as next digit of the result. 
Result so far: 48.0
Deduct 104 from 104 and we're left with 0.
Take the next digit (9) from the dividend and append it to 0, then repeat: 9 / 13

On to step 4:
9 divided by 13 is 0 with a remainder of 9.
Use 0 as the next digit of our solution. 
Result so far: 480.0
Deduct 0 from 9 and we're left with 9.
Grab the next digit (5) from the dividend, add it to 9, then carry on: 95 / 13

Let's proceed to step 5:
When dividing 95 by 13, we get 7 with a remainder of 4.
Record the quotient 7 as the next digit in the result. 
Result so far: 4807.0
Subtracting 91 from 95 leaves us with 4.
Grab the next digit (2) from the dividend, add it to 4, then carry on: 42 / 13

On to step 6:
If we divide 42 by 13, we get 3 and a remainder of 3.
Write down 3 as next digit of the result. 
Result so far: 48073.0
If we take 39 away from 42, we end up 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.

Advancing to step 7:
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: 48073.2
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.

On to step 8:
40 divided by 13 is 3 with a remainder of 1.
Record the quotient 3 as the next digit in the result. 
Result so far: 48073.23
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.

Going ahead to step 9:
When dividing 10 by 13, we get 0 with a remainder of 10.
The number 0 becomes the next digit in our result. 
Result so far: 48073.23
If we take 0 away from 10, we end up 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.

On to step 10:
When dividing 100 by 13, we get 7 with a remainder of 9.
Use 7 as the next digit of our solution. 
Result so far: 48073.2307
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.

Step 11:
13 goes into 90 6 times with a remainder of 12.
Write down 6 as next digit of the result. 
Result so far: 48073.23076
If we take 78 away from 90, we end up 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.

Advancing to step 12:
If we divide 120 by 13, we get 9 and a remainder of 3.
The next digit of our result is 9. 
Result so far: 48073.230769
The remainder is 3 after subtracting 117 from 120.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

Going ahead to step 13:
30 divided by 13 is 2 with a remainder of 4.
Write down 2 as next digit of the result. 
Result so far: 48073.2307692
If we take 26 away from 30, we end up 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.

Going ahead to step 14:
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: 48073.23076923
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.

Our division results in 48073.23076923 with a remaining 1e-09.