408610 divided by 13 
The aim is to understand the frequency of 13 in 408610.

Moving on to step 1:
13 goes into 4 0 times with a remainder of 4.
The next digit of our result is 0. 
Result so far: 0.0
The remainder is 4 after subtracting 0 from 4.
Grab the next digit (0) from the dividend, add it to 4, then carry on: 40 / 13

Step 2:
If we divide 40 by 13, we get 3 and a remainder of 1.
Put 3 as the next digit of the answer. 
Result so far: 3.0
Subtracting 39 from 40 leaves us with 1.
Bring next digit (8) of the dividend behind the 1 and repeat the process: 18 / 13

On to step 3:
If we divide 18 by 13, we get 1 and a remainder of 5.
Record the quotient 1 as the next digit in the result. 
Result so far: 31.0
Subtracting 13 from 18 leaves us with 5.
Fetch the next digit (6) from the dividend, attach it to 5 and continue: 56 / 13

On to step 4:
13 goes into 56 4 times with a remainder of 4.
Write down 4 as next digit of the result. 
Result so far: 314.0
Subtract 52 from 56 to get 4.
Append the next digit (1) from the dividend to 4 and continue with: 41 / 13

Step 5:
If we divide 41 by 13, we get 3 and a remainder of 2.
Use 3 as the next digit of our solution. 
Result so far: 3143.0
Subtracting 39 from 41 leaves us with 2.
Bring next digit (0) of the dividend behind the 2 and repeat the process: 20 / 13

Step 6:
If we divide 20 by 13, we get 1 and a remainder of 7.
Put 1 as the next digit of the answer. 
Result so far: 31431.0
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.

Moving on to step 7:
If we divide 70 by 13, we get 5 and a remainder of 5.
Use 5 as the next digit of our solution. 
Result so far: 31431.5
If we take 65 away from 70, we end up 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.

Going ahead to step 8:
50 divided by 13 is 3 with a remainder of 11.
The next digit of our result is 3. 
Result so far: 31431.53
Deduct 39 from 50 and we're left with 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 9:
13 can be fit into 110 8 times, resulting in a remainder of 6.
Write down 8 as next digit of the result. 
Result so far: 31431.538
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.

Moving on to step 10:
13 can be fit into 60 4 times, resulting in a remainder of 8.
Write down 4 as next digit of the result. 
Result so far: 31431.5384
Subtract 52 from 60 to get 8.
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 11:
When dividing 80 by 13, we get 6 with a remainder of 2.
The number 6 becomes the next digit in our result. 
Result so far: 31431.53846
The remainder is 2 after subtracting 78 from 80.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Advancing to step 12:
If we divide 20 by 13, we get 1 and a remainder of 7.
The number 1 becomes the next digit in our result. 
Result so far: 31431.538461
Deduct 13 from 20 and we're left with 7.
Since there are no more digits in the dividend, we add a zero to the remainder making it 70, and continue the process.

Moving on to step 13:
13 goes into 70 5 times with a remainder of 5.
Write down 5 as next digit of the result. 
Result so far: 31431.5384615
The remainder is 5 after subtracting 65 from 70.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Let's proceed to step 14:
The number 13 fits into 50 3 times, leaving a remainder of 11.
The next digit of our result is 3. 
Result so far: 31431.53846153
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.

Our division results in 31431.53846153 with a remaining 1.1e-08.