We're dividing 20183910 by 993 
The aim is to understand the frequency of 993 in 20183910.

Moving on to step 1:
993 goes into 2 0 times with a remainder of 2.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 2, we end up with 2.
Take the next digit (0) from the dividend and append it to 2, then repeat: 20 / 993

On to step 2:
993 can be fit into 20 0 times, resulting in a remainder of 20.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
The remainder is 20 after subtracting 0 from 20.
Take the next digit (1) from the dividend and append it to 20, then repeat: 201 / 993

Advancing to step 3:
993 goes into 201 0 times with a remainder of 201.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 201 and we're left with 201.
Fetch the next digit (8) from the dividend, attach it to 201 and continue: 2018 / 993

Let's proceed to step 4:
993 goes into 2018 2 times with a remainder of 32.
Use 2 as the next digit of our solution. 
Result so far: 2.0
Subtracting 1986 from 2018 leaves us with 32.
Take the next digit (3) from the dividend and append it to 32, then repeat: 323 / 993

Let's proceed to step 5:
993 goes into 323 0 times with a remainder of 323.
Put 0 as the next digit of the answer. 
Result so far: 20.0
Subtract 0 from 323 to get 323.
Fetch the next digit (9) from the dividend, attach it to 323 and continue: 3239 / 993

On to step 6:
When dividing 3239 by 993, we get 3 with a remainder of 260.
The number 3 becomes the next digit in our result. 
Result so far: 203.0
The remainder is 260 after subtracting 2979 from 3239.
Fetch the next digit (1) from the dividend, attach it to 260 and continue: 2601 / 993

Going ahead to step 7:
993 goes into 2601 2 times with a remainder of 615.
Use 2 as the next digit of our solution. 
Result so far: 2032.0
Subtract 1986 from 2601 to get 615.
Fetch the next digit (0) from the dividend, attach it to 615 and continue: 6150 / 993

On to step 8:
993 goes into 6150 6 times with a remainder of 192.
Put 6 as the next digit of the answer. 
Result so far: 20326.0
Subtracting 5958 from 6150 leaves us with 192.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1920, and continue the process.

Step 9:
If we divide 1920 by 993, we get 1 and a remainder of 927.
Write down 1 as next digit of the result. 
Result so far: 20326.1
Deduct 993 from 1920 and we're left with 927.
Since there are no more digits in the dividend, we add a zero to the remainder making it 9270, and continue the process.

Step 10:
993 goes into 9270 9 times with a remainder of 333.
Record the quotient 9 as the next digit in the result. 
Result so far: 20326.19
Subtracting 8937 from 9270 leaves us with 333.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3330, and continue the process.

Let's proceed to step 11:
The number 993 fits into 3330 3 times, leaving a remainder of 351.
The number 3 becomes the next digit in our result. 
Result so far: 20326.193
If we subtract 2979 from 3330, we get 351.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3510, and continue the process.

Advancing to step 12:
993 can be fit into 3510 3 times, resulting in a remainder of 531.
Use 3 as the next digit of our solution. 
Result so far: 20326.1933
Subtract 2979 from 3510 to get 531.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5310, and continue the process.

The quotient of the division is 20326.1933, and the remainder is 0.00531.