We divide 383919 by 13
The aim is to understand the frequency of 13 in 383919.

Let's proceed to step 1:
When dividing 3 by 13, we get 0 with a remainder of 3.
Write down 0 as next digit of the result. 
Result so far: 0.0
Deduct 0 from 3 and we're left with 3.
Append the next digit (8) from the dividend to 3 and continue with: 38 / 13

On to step 2:
If we divide 38 by 13, we get 2 and a remainder of 12.
The next digit of our result is 2. 
Result so far: 2.0
If we take 26 away from 38, we end up with 12.
Grab the next digit (3) from the dividend, add it to 12, then carry on: 123 / 13

Let's proceed to step 3:
123 divided by 13 is 9 with a remainder of 6.
Put 9 as the next digit of the answer. 
Result so far: 29.0
If we subtract 117 from 123, we get 6.
Append the next digit (9) from the dividend to 6 and continue with: 69 / 13

Step 4:
13 can be fit into 69 5 times, resulting in a remainder of 4.
Write down 5 as next digit of the result. 
Result so far: 295.0
Subtracting 65 from 69 leaves us with 4.
Fetch the next digit (1) from the dividend, attach it to 4 and continue: 41 / 13

Let's proceed to step 5:
If we divide 41 by 13, we get 3 and a remainder of 2.
Put 3 as the next digit of the answer. 
Result so far: 2953.0
Subtract 39 from 41 to get 2.
Fetch the next digit (9) from the dividend, attach it to 2 and continue: 29 / 13

Step 6:
29 divided by 13 is 2 with a remainder of 3.
The number 2 becomes the next digit in our result. 
Result so far: 29532.0
If we subtract 26 from 29, we 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.

Let's proceed to step 7:
The number 13 fits into 30 2 times, leaving a remainder of 4.
Write down 2 as next digit of the result. 
Result so far: 29532.2
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.
The number 3 becomes the next digit in our result. 
Result so far: 29532.23
Deduct 39 from 40 and we're left 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 9:
13 goes into 10 0 times with a remainder of 10.
Put 0 as the next digit of the answer. 
Result so far: 29532.23
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.

On to step 10:
The number 13 fits into 100 7 times, leaving a remainder of 9.
The next digit of our result is 7. 
Result so far: 29532.2307
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.

On to step 11:
When dividing 90 by 13, we get 6 with a remainder of 12.
Use 6 as the next digit of our solution. 
Result so far: 29532.23076
If we subtract 78 from 90, we get 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

Going ahead to step 12:
The number 13 fits into 120 9 times, leaving a remainder of 3.
Write down 9 as next digit of the result. 
Result so far: 29532.230769
If we subtract 117 from 120, we 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.

Let's proceed to step 13:
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: 29532.2307692
Subtracting 26 from 30 leaves us 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.

Step 14:
13 goes into 40 3 times with a remainder of 1.
Put 3 as the next digit of the answer. 
Result so far: 29532.23076923
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.

After the division, we end up with 29532.23076923 and a remainder of 1e-09.