We look at the division of 33781363 by 993 
The aim is to understand the frequency of 993 in 33781363.

Going ahead to step 1:
3 divided by 993 is 0 with a remainder of 3.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 3 to get 3.
Append the next digit (3) from the dividend to 3 and continue with: 33 / 993

Advancing to step 2:
The number 993 fits into 33 0 times, leaving a remainder of 33.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtracting 0 from 33 leaves us with 33.
Include the next digit (7) from the dividend after 33, then repeat: 337 / 993

Advancing to step 3:
337 divided by 993 is 0 with a remainder of 337.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 337 to get 337.
Grab the next digit (8) from the dividend, add it to 337, then carry on: 3378 / 993

Let's proceed to step 4:
3378 divided by 993 is 3 with a remainder of 399.
Record the quotient 3 as the next digit in the result. 
Result so far: 3.0
If we take 2979 away from 3378, we end up with 399.
Fetch the next digit (1) from the dividend, attach it to 399 and continue: 3991 / 993

Advancing to step 5:
When dividing 3991 by 993, we get 4 with a remainder of 19.
The number 4 becomes the next digit in our result. 
Result so far: 34.0
If we subtract 3972 from 3991, we get 19.
Append the next digit (3) from the dividend to 19 and continue with: 193 / 993

Moving on to step 6:
The number 993 fits into 193 0 times, leaving a remainder of 193.
Put 0 as the next digit of the answer. 
Result so far: 340.0
Subtract 0 from 193 to get 193.
Append the next digit (6) from the dividend to 193 and continue with: 1936 / 993

Moving on to step 7:
The number 993 fits into 1936 1 times, leaving a remainder of 943.
The number 1 becomes the next digit in our result. 
Result so far: 3401.0
Subtracting 993 from 1936 leaves us with 943.
Take the next digit (3) from the dividend and append it to 943, then repeat: 9433 / 993

Going ahead to step 8:
If we divide 9433 by 993, we get 9 and a remainder of 496.
The number 9 becomes the next digit in our result. 
Result so far: 34019.0
Subtract 8937 from 9433 to get 496.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4960, and continue the process.

On to step 9:
4960 divided by 993 is 4 with a remainder of 988.
Put 4 as the next digit of the answer. 
Result so far: 34019.4
If we take 3972 away from 4960, we end up with 988.
Since there are no more digits in the dividend, we add a zero to the remainder making it 9880, and continue the process.

Step 10:
When dividing 9880 by 993, we get 9 with a remainder of 943.
Use 9 as the next digit of our solution. 
Result so far: 34019.49
The remainder is 943 after subtracting 8937 from 9880.
Since there are no more digits in the dividend, we add a zero to the remainder making it 9430, and continue the process.

Let's proceed to step 11:
The number 993 fits into 9430 9 times, leaving a remainder of 493.
Write down 9 as next digit of the result. 
Result so far: 34019.499
Subtracting 8937 from 9430 leaves us with 493.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4930, and continue the process.

Our division results in 34019.499 with a remaining 0.0493.