Let's divide 99399574 by 993
The aim is to understand the frequency of 993 in 99399574.

Step 1:
993 can be fit into 9 0 times, resulting in a remainder of 9.
The next digit of our result is 0. 
Result so far: 0.0
Subtracting 0 from 9 leaves us with 9.
Bring next digit (9) of the dividend behind the 9 and repeat the process: 99 / 993

Let's proceed to step 2:
993 can be fit into 99 0 times, resulting in a remainder of 99.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 99 to get 99.
Include the next digit (3) from the dividend after 99, then repeat: 993 / 993

Step 3:
993 can be fit into 993 1 times, resulting in a remainder of 0.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
The remainder is 0 after subtracting 993 from 993.
Fetch the next digit (9) from the dividend, attach it to 0 and continue: 9 / 993

Step 4:
If we divide 9 by 993, we get 0 and a remainder of 9.
Record the quotient 0 as the next digit in the result. 
Result so far: 10.0
Subtracting 0 from 9 leaves us with 9.
Bring next digit (9) of the dividend behind the 9 and repeat the process: 99 / 993

Let's proceed to step 5:
If we divide 99 by 993, we get 0 and a remainder of 99.
Use 0 as the next digit of our solution. 
Result so far: 100.0
Subtract 0 from 99 to get 99.
Take the next digit (5) from the dividend and append it to 99, then repeat: 995 / 993

On to step 6:
If we divide 995 by 993, we get 1 and a remainder of 2.
Put 1 as the next digit of the answer. 
Result so far: 1001.0
Subtract 993 from 995 to get 2.
Fetch the next digit (7) from the dividend, attach it to 2 and continue: 27 / 993

Going ahead to step 7:
993 goes into 27 0 times with a remainder of 27.
Write down 0 as next digit of the result. 
Result so far: 10010.0
If we take 0 away from 27, we end up with 27.
Take the next digit (4) from the dividend and append it to 27, then repeat: 274 / 993

On to step 8:
The number 993 fits into 274 0 times, leaving a remainder of 274.
The next digit of our result is 0. 
Result so far: 100100.0
If we subtract 0 from 274, we get 274.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2740, and continue the process.

Moving on to step 9:
993 goes into 2740 2 times with a remainder of 754.
Put 2 as the next digit of the answer. 
Result so far: 100100.2
If we subtract 1986 from 2740, we get 754.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7540, and continue the process.

Let's proceed to step 10:
993 can be fit into 7540 7 times, resulting in a remainder of 589.
Use 7 as the next digit of our solution. 
Result so far: 100100.27
If we take 6951 away from 7540, we end up with 589.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5890, and continue the process.

Going ahead to step 11:
993 goes into 5890 5 times with a remainder of 925.
Use 5 as the next digit of our solution. 
Result so far: 100100.275
Deduct 4965 from 5890 and we're left with 925.
Since there are no more digits in the dividend, we add a zero to the remainder making it 9250, and continue the process.

Going ahead to step 12:
9250 divided by 993 is 9 with a remainder of 313.
Write down 9 as next digit of the result. 
Result so far: 100100.2759
If we take 8937 away from 9250, we end up with 313.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3130, and continue the process.

Advancing to step 13:
993 can be fit into 3130 3 times, resulting in a remainder of 151.
The number 3 becomes the next digit in our result. 
Result so far: 100100.27593
The remainder is 151 after subtracting 2979 from 3130.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1510, and continue the process.

Moving on to step 14:
The number 993 fits into 1510 1 times, leaving a remainder of 517.
Record the quotient 1 as the next digit in the result. 
Result so far: 100100.275931
Deduct 993 from 1510 and we're left with 517.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5170, and continue the process.

Going ahead to step 15:
The number 993 fits into 5170 5 times, leaving a remainder of 205.
The next digit of our result is 5. 
Result so far: 100100.2759315
The remainder is 205 after subtracting 4965 from 5170.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2050, and continue the process.

Step 16:
The number 993 fits into 2050 2 times, leaving a remainder of 64.
Use 2 as the next digit of our solution. 
Result so far: 100100.27593152
Subtract 1986 from 2050 to get 64.
Since there are no more digits in the dividend, we add a zero to the remainder making it 640, and continue the process.

The final outcome is 100100.27593152, with a leftover of 6.4e-08.