629543 divided by 13 
The aim is to understand the frequency of 13 in 629543.

Let's proceed to step 1:
If we divide 6 by 13, we get 0 and a remainder of 6.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we subtract 0 from 6, we get 6.
Fetch the next digit (2) from the dividend, attach it to 6 and continue: 62 / 13

Moving on to step 2:
When dividing 62 by 13, we get 4 with a remainder of 10.
Use 4 as the next digit of our solution. 
Result so far: 4.0
If we subtract 52 from 62, we get 10.
Take the next digit (9) from the dividend and append it to 10, then repeat: 109 / 13

Let's proceed to step 3:
If we divide 109 by 13, we get 8 and a remainder of 5.
Write down 8 as next digit of the result. 
Result so far: 48.0
The remainder is 5 after subtracting 104 from 109.
Bring next digit (5) of the dividend behind the 5 and repeat the process: 55 / 13

Let's proceed to step 4:
When dividing 55 by 13, we get 4 with a remainder of 3.
The next digit of our result is 4. 
Result so far: 484.0
If we take 52 away from 55, we end up with 3.
Include the next digit (4) from the dividend after 3, then repeat: 34 / 13

On to step 5:
13 can be fit into 34 2 times, resulting in a remainder of 8.
Record the quotient 2 as the next digit in the result. 
Result so far: 4842.0
Subtracting 26 from 34 leaves us with 8.
Append the next digit (3) from the dividend to 8 and continue with: 83 / 13

Step 6:
83 divided by 13 is 6 with a remainder of 5.
Put 6 as the next digit of the answer. 
Result so far: 48426.0
If we subtract 78 from 83, 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.

Moving on to step 7:
13 can be fit into 50 3 times, resulting in a remainder of 11.
Write down 3 as next digit of the result. 
Result so far: 48426.3
The remainder is 11 after subtracting 39 from 50.
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 8:
If we divide 110 by 13, we get 8 and a remainder of 6.
Put 8 as the next digit of the answer. 
Result so far: 48426.38
Subtract 104 from 110 to get 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Advancing to step 9:
13 goes into 60 4 times with a remainder of 8.
Write down 4 as next digit of the result. 
Result so far: 48426.384
The remainder is 8 after subtracting 52 from 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

On to step 10:
The number 13 fits into 80 6 times, leaving a remainder of 2.
The next digit of our result is 6. 
Result so far: 48426.3846
If we subtract 78 from 80, we get 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Moving on to step 11:
13 goes into 20 1 times with a remainder of 7.
Write down 1 as next digit of the result. 
Result so far: 48426.38461
Subtract 13 from 20 to get 7.
Since there are no more digits in the dividend, we add a zero to the remainder making it 70, and continue the process.

Going ahead to step 12:
The number 13 fits into 70 5 times, leaving a remainder of 5.
Write down 5 as next digit of the result. 
Result so far: 48426.384615
Deduct 65 from 70 and we're left with 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 13:
If we divide 50 by 13, we get 3 and a remainder of 11.
Use 3 as the next digit of our solution. 
Result so far: 48426.3846153
If we subtract 39 from 50, we get 11.
Since there are no more digits in the dividend, we add a zero to the remainder making it 110, and continue the process.

Advancing to step 14:
110 divided by 13 is 8 with a remainder of 6.
Write down 8 as next digit of the result. 
Result so far: 48426.38461538
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.

Our division results in 48426.38461538 with a remaining 6e-09.