We're dividing 335361 by 13 
The aim is to understand the frequency of 13 in 335361.

On to step 1:
The number 13 fits into 3 0 times, leaving a remainder of 3.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 3 after subtracting 0 from 3.
Take the next digit (3) from the dividend and append it to 3, then repeat: 33 / 13

Moving on to step 2:
If we divide 33 by 13, we get 2 and a remainder of 7.
Record the quotient 2 as the next digit in the result. 
Result so far: 2.0
Deduct 26 from 33 and we're left with 7.
Append the next digit (5) from the dividend to 7 and continue with: 75 / 13

Advancing to step 3:
13 can be fit into 75 5 times, resulting in a remainder of 10.
The next digit of our result is 5. 
Result so far: 25.0
Subtracting 65 from 75 leaves us with 10.
Fetch the next digit (3) from the dividend, attach it to 10 and continue: 103 / 13

On to step 4:
13 goes into 103 7 times with a remainder of 12.
Write down 7 as next digit of the result. 
Result so far: 257.0
Subtract 91 from 103 to get 12.
Grab the next digit (6) from the dividend, add it to 12, then carry on: 126 / 13

Advancing to step 5:
When dividing 126 by 13, we get 9 with a remainder of 9.
Write down 9 as next digit of the result. 
Result so far: 2579.0
Subtracting 117 from 126 leaves us with 9.
Take the next digit (1) from the dividend and append it to 9, then repeat: 91 / 13

On to step 6:
13 goes into 91 7 times with a remainder of 0.
The next digit of our result is 7. 
Result so far: 25797.0
The remainder is 0 after subtracting 91 from 91.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Moving on to step 7:
13 goes into 0 0 times with a remainder of 0.
The next digit of our result is 0. 
Result so far: 25797.0
The remainder is 0 after subtracting 0 from 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Let's proceed to step 8:
The number 13 fits into 0 0 times, leaving a remainder of 0.
Write down 0 as next digit of the result. 
Result so far: 25797.0
Subtracting 0 from 0 leaves us with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

The final outcome is 25797.0, with a leftover of 0.0.