We look at the division of 396696 by 33 
The aim is to understand the frequency of 33 in 396696.

On to step 1:
If we divide 3 by 33, we get 0 and a remainder of 3.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 3, we end up with 3.
Include the next digit (9) from the dividend after 3, then repeat: 39 / 33

On to step 2:
33 goes into 39 1 times with a remainder of 6.
Write down 1 as next digit of the result. 
Result so far: 1.0
Deduct 33 from 39 and we're left with 6.
Bring next digit (6) of the dividend behind the 6 and repeat the process: 66 / 33

Let's proceed to step 3:
If we divide 66 by 33, we get 2 and a remainder of 0.
Record the quotient 2 as the next digit in the result. 
Result so far: 12.0
The remainder is 0 after subtracting 66 from 66.
Append the next digit (6) from the dividend to 0 and continue with: 6 / 33

Advancing to step 4:
33 goes into 6 0 times with a remainder of 6.
Record the quotient 0 as the next digit in the result. 
Result so far: 120.0
If we subtract 0 from 6, we get 6.
Grab the next digit (9) from the dividend, add it to 6, then carry on: 69 / 33

Step 5:
When dividing 69 by 33, we get 2 with a remainder of 3.
The number 2 becomes the next digit in our result. 
Result so far: 1202.0
The remainder is 3 after subtracting 66 from 69.
Append the next digit (6) from the dividend to 3 and continue with: 36 / 33

On to step 6:
33 goes into 36 1 times with a remainder of 3.
Use 1 as the next digit of our solution. 
Result so far: 12021.0
If we take 33 away from 36, 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.

Going ahead to step 7:
30 divided by 33 is 0 with a remainder of 30.
The number 0 becomes the next digit in our result. 
Result so far: 12021.0
Subtract 0 from 30 to get 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

Let's proceed to step 8:
300 divided by 33 is 9 with a remainder of 3.
The number 9 becomes the next digit in our result. 
Result so far: 12021.09
Subtracting 297 from 300 leaves us 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.

Step 9:
33 goes into 30 0 times with a remainder of 30.
Record the quotient 0 as the next digit in the result. 
Result so far: 12021.09
If we take 0 away from 30, we end up with 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

Moving on to step 10:
33 goes into 300 9 times with a remainder of 3.
Write down 9 as next digit of the result. 
Result so far: 12021.0909
If we take 297 away from 300, 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.

Moving on to step 11:
If we divide 30 by 33, we get 0 and a remainder of 30.
Write down 0 as next digit of the result. 
Result so far: 12021.0909
Subtracting 0 from 30 leaves us with 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

Moving on to step 12:
The number 33 fits into 300 9 times, leaving a remainder of 3.
Write down 9 as next digit of the result. 
Result so far: 12021.090909
Subtracting 297 from 300 leaves us 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.

On to step 13:
33 goes into 30 0 times with a remainder of 30.
Use 0 as the next digit of our solution. 
Result so far: 12021.090909
If we take 0 away from 30, we end up with 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

Going ahead to step 14:
33 goes into 300 9 times with a remainder of 3.
Record the quotient 9 as the next digit in the result. 
Result so far: 12021.09090909
The remainder is 3 after subtracting 297 from 300.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

After the division, we end up with 12021.09090909 and a remainder of 3e-09.