We look at the division of 621872 by 33 
The aim is to understand the frequency of 33 in 621872.

Moving on to step 1:
When dividing 6 by 33, we get 0 with a remainder of 6.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 6 leaves us with 6.
Bring next digit (2) of the dividend behind the 6 and repeat the process: 62 / 33

On to step 2:
When dividing 62 by 33, we get 1 with a remainder of 29.
Use 1 as the next digit of our solution. 
Result so far: 1.0
Subtracting 33 from 62 leaves us with 29.
Include the next digit (1) from the dividend after 29, then repeat: 291 / 33

Moving on to step 3:
If we divide 291 by 33, we get 8 and a remainder of 27.
Write down 8 as next digit of the result. 
Result so far: 18.0
Deduct 264 from 291 and we're left with 27.
Bring next digit (8) of the dividend behind the 27 and repeat the process: 278 / 33

Let's proceed to step 4:
If we divide 278 by 33, we get 8 and a remainder of 14.
Use 8 as the next digit of our solution. 
Result so far: 188.0
If we take 264 away from 278, we end up with 14.
Bring next digit (7) of the dividend behind the 14 and repeat the process: 147 / 33

On to step 5:
33 can be fit into 147 4 times, resulting in a remainder of 15.
The number 4 becomes the next digit in our result. 
Result so far: 1884.0
The remainder is 15 after subtracting 132 from 147.
Grab the next digit (2) from the dividend, add it to 15, then carry on: 152 / 33

Advancing to step 6:
33 can be fit into 152 4 times, resulting in a remainder of 20.
The number 4 becomes the next digit in our result. 
Result so far: 18844.0
Subtracting 132 from 152 leaves us with 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Moving on to step 7:
33 goes into 200 6 times with a remainder of 2.
The next digit of our result is 6. 
Result so far: 18844.6
If we take 198 away from 200, we end up with 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Moving on to step 8:
The number 33 fits into 20 0 times, leaving a remainder of 20.
Record the quotient 0 as the next digit in the result. 
Result so far: 18844.6
If we subtract 0 from 20, we get 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Advancing to step 9:
33 goes into 200 6 times with a remainder of 2.
The number 6 becomes the next digit in our result. 
Result so far: 18844.606
If we take 198 away from 200, we end up with 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Moving on to step 10:
When dividing 20 by 33, we get 0 with a remainder of 20.
Write down 0 as next digit of the result. 
Result so far: 18844.606
If we subtract 0 from 20, we get 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Moving on to step 11:
When dividing 200 by 33, we get 6 with a remainder of 2.
The number 6 becomes the next digit in our result. 
Result so far: 18844.60606
Subtracting 198 from 200 leaves us with 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Let's proceed to step 12:
33 goes into 20 0 times with a remainder of 20.
The number 0 becomes the next digit in our result. 
Result so far: 18844.60606
If we subtract 0 from 20, we get 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

On to step 13:
When dividing 200 by 33, we get 6 with a remainder of 2.
Write down 6 as next digit of the result. 
Result so far: 18844.6060606
The remainder is 2 after subtracting 198 from 200.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Moving on to step 14:
20 divided by 33 is 0 with a remainder of 20.
Use 0 as the next digit of our solution. 
Result so far: 18844.6060606
Deduct 0 from 20 and we're left with 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

The final result is 18844.6060606 with a remainder of 2e-08.