We look at the division of 873357 by 33 
The aim is to understand the frequency of 33 in 873357.

Step 1:
33 can be fit into 8 0 times, resulting in a remainder of 8.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 8 to get 8.
Bring next digit (7) of the dividend behind the 8 and repeat the process: 87 / 33

On to step 2:
If we divide 87 by 33, we get 2 and a remainder of 21.
The next digit of our result is 2. 
Result so far: 2.0
If we subtract 66 from 87, we get 21.
Bring next digit (3) of the dividend behind the 21 and repeat the process: 213 / 33

Advancing to step 3:
33 goes into 213 6 times with a remainder of 15.
The next digit of our result is 6. 
Result so far: 26.0
If we take 198 away from 213, we end up with 15.
Bring next digit (3) of the dividend behind the 15 and repeat the process: 153 / 33

Let's proceed to step 4:
When dividing 153 by 33, we get 4 with a remainder of 21.
The number 4 becomes the next digit in our result. 
Result so far: 264.0
If we take 132 away from 153, we end up with 21.
Fetch the next digit (5) from the dividend, attach it to 21 and continue: 215 / 33

Let's proceed to step 5:
If we divide 215 by 33, we get 6 and a remainder of 17.
Put 6 as the next digit of the answer. 
Result so far: 2646.0
Subtracting 198 from 215 leaves us with 17.
Append the next digit (7) from the dividend to 17 and continue with: 177 / 33

On to step 6:
When dividing 177 by 33, we get 5 with a remainder of 12.
The number 5 becomes the next digit in our result. 
Result so far: 26465.0
If we subtract 165 from 177, we get 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

On to step 7:
120 divided by 33 is 3 with a remainder of 21.
Put 3 as the next digit of the answer. 
Result so far: 26465.3
Subtract 99 from 120 to get 21.
Since there are no more digits in the dividend, we add a zero to the remainder making it 210, and continue the process.

On to step 8:
210 divided by 33 is 6 with a remainder of 12.
The next digit of our result is 6. 
Result so far: 26465.36
If we subtract 198 from 210, we get 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

On to step 9:
33 goes into 120 3 times with a remainder of 21.
Use 3 as the next digit of our solution. 
Result so far: 26465.363
If we take 99 away from 120, we end up with 21.
Since there are no more digits in the dividend, we add a zero to the remainder making it 210, and continue the process.

Let's proceed to step 10:
If we divide 210 by 33, we get 6 and a remainder of 12.
The number 6 becomes the next digit in our result. 
Result so far: 26465.3636
If we take 198 away from 210, we end up with 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

Let's proceed to step 11:
If we divide 120 by 33, we get 3 and a remainder of 21.
The number 3 becomes the next digit in our result. 
Result so far: 26465.36363
Deduct 99 from 120 and we're left with 21.
Since there are no more digits in the dividend, we add a zero to the remainder making it 210, and continue the process.

Moving on to step 12:
33 can be fit into 210 6 times, resulting in a remainder of 12.
The next digit of our result is 6. 
Result so far: 26465.363636
If we take 198 away from 210, we end up with 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

Advancing to step 13:
If we divide 120 by 33, we get 3 and a remainder of 21.
Use 3 as the next digit of our solution. 
Result so far: 26465.3636363
Subtracting 99 from 120 leaves us with 21.
Since there are no more digits in the dividend, we add a zero to the remainder making it 210, and continue the process.

Step 14:
If we divide 210 by 33, we get 6 and a remainder of 12.
Write down 6 as next digit of the result. 
Result so far: 26465.36363636
If we take 198 away from 210, we end up with 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

The final result is 26465.36363636 with a remainder of 1.2e-08.