We look at the division of 413644 by 33 
The aim is to understand the frequency of 33 in 413644.

On to step 1:
If we divide 4 by 33, we get 0 and a remainder of 4.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
The remainder is 4 after subtracting 0 from 4.
Append the next digit (1) from the dividend to 4 and continue with: 41 / 33

Advancing to step 2:
The number 33 fits into 41 1 times, leaving a remainder of 8.
The next digit of our result is 1. 
Result so far: 1.0
If we subtract 33 from 41, we get 8.
Append the next digit (3) from the dividend to 8 and continue with: 83 / 33

Step 3:
If we divide 83 by 33, we get 2 and a remainder of 17.
Put 2 as the next digit of the answer. 
Result so far: 12.0
Subtracting 66 from 83 leaves us with 17.
Bring next digit (6) of the dividend behind the 17 and repeat the process: 176 / 33

Let's proceed to step 4:
33 goes into 176 5 times with a remainder of 11.
Write down 5 as next digit of the result. 
Result so far: 125.0
The remainder is 11 after subtracting 165 from 176.
Bring next digit (4) of the dividend behind the 11 and repeat the process: 114 / 33

Moving on to step 5:
33 goes into 114 3 times with a remainder of 15.
Use 3 as the next digit of our solution. 
Result so far: 1253.0
Subtracting 99 from 114 leaves us with 15.
Bring next digit (4) of the dividend behind the 15 and repeat the process: 154 / 33

Moving on to step 6:
33 goes into 154 4 times with a remainder of 22.
The number 4 becomes the next digit in our result. 
Result so far: 12534.0
Subtract 132 from 154 to get 22.
Since there are no more digits in the dividend, we add a zero to the remainder making it 220, and continue the process.

Advancing to step 7:
33 goes into 220 6 times with a remainder of 22.
Write down 6 as next digit of the result. 
Result so far: 12534.6
If we take 198 away from 220, we end up with 22.
Since there are no more digits in the dividend, we add a zero to the remainder making it 220, and continue the process.

Let's proceed to step 8:
When dividing 220 by 33, we get 6 with a remainder of 22.
The next digit of our result is 6. 
Result so far: 12534.66
Deduct 198 from 220 and we're left with 22.
Since there are no more digits in the dividend, we add a zero to the remainder making it 220, and continue the process.

The final result is 12534.66 with a remainder of 0.022.