Let's divide 631916 by 13
The aim is to understand the frequency of 13 in 631916.

Advancing to step 1:
When dividing 6 by 13, we get 0 with a remainder of 6.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 6 leaves us with 6.
Grab the next digit (3) from the dividend, add it to 6, then carry on: 63 / 13

Advancing to step 2:
13 goes into 63 4 times with a remainder of 11.
Write down 4 as next digit of the result. 
Result so far: 4.0
The remainder is 11 after subtracting 52 from 63.
Bring next digit (1) of the dividend behind the 11 and repeat the process: 111 / 13

Moving on to step 3:
111 divided by 13 is 8 with a remainder of 7.
Put 8 as the next digit of the answer. 
Result so far: 48.0
If we take 104 away from 111, we end up with 7.
Append the next digit (9) from the dividend to 7 and continue with: 79 / 13

Advancing to step 4:
When dividing 79 by 13, we get 6 with a remainder of 1.
The next digit of our result is 6. 
Result so far: 486.0
The remainder is 1 after subtracting 78 from 79.
Include the next digit (1) from the dividend after 1, then repeat: 11 / 13

Let's proceed to step 5:
11 divided by 13 is 0 with a remainder of 11.
Use 0 as the next digit of our solution. 
Result so far: 4860.0
Deduct 0 from 11 and we're left with 11.
Include the next digit (6) from the dividend after 11, then repeat: 116 / 13

Step 6:
13 can be fit into 116 8 times, resulting in a remainder of 12.
The number 8 becomes the next digit in our result. 
Result so far: 48608.0
The remainder is 12 after subtracting 104 from 116.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

Moving on to step 7:
13 can be fit into 120 9 times, resulting in a remainder of 3.
Write down 9 as next digit of the result. 
Result so far: 48608.9
If we take 117 away from 120, 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 8:
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: 48608.92
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.

Moving on to step 9:
The number 13 fits into 40 3 times, leaving a remainder of 1.
Put 3 as the next digit of the answer. 
Result so far: 48608.923
If we take 39 away from 40, we end up 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.

Step 10:
13 can be fit into 10 0 times, resulting in a remainder of 10.
Put 0 as the next digit of the answer. 
Result so far: 48608.923
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.

Step 11:
100 divided by 13 is 7 with a remainder of 9.
Write down 7 as next digit of the result. 
Result so far: 48608.92307
If we take 91 away from 100, we end up 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.

On to step 12:
13 can be fit into 90 6 times, resulting in a remainder of 12.
Put 6 as the next digit of the answer. 
Result so far: 48608.923076
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.

Moving on to step 13:
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: 48608.9230769
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.

Moving on to step 14:
The number 13 fits into 30 2 times, leaving a remainder of 4.
Put 2 as the next digit of the answer. 
Result so far: 48608.92307692
The remainder is 4 after subtracting 26 from 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Our division results in 48608.92307692 with a remaining 4e-09.