Let's divide 42150408 by 993
The aim is to understand the frequency of 993 in 42150408.

On to step 1:
993 can be fit into 4 0 times, resulting in a remainder of 4.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 4 leaves us with 4.
Bring next digit (2) of the dividend behind the 4 and repeat the process: 42 / 993

Advancing to step 2:
993 goes into 42 0 times with a remainder of 42.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 42, we get 42.
Include the next digit (1) from the dividend after 42, then repeat: 421 / 993

Advancing to step 3:
993 goes into 421 0 times with a remainder of 421.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 421, we get 421.
Append the next digit (5) from the dividend to 421 and continue with: 4215 / 993

Moving on to step 4:
The number 993 fits into 4215 4 times, leaving a remainder of 243.
Write down 4 as next digit of the result. 
Result so far: 4.0
If we subtract 3972 from 4215, we get 243.
Grab the next digit (0) from the dividend, add it to 243, then carry on: 2430 / 993

Moving on to step 5:
When dividing 2430 by 993, we get 2 with a remainder of 444.
Use 2 as the next digit of our solution. 
Result so far: 42.0
If we subtract 1986 from 2430, we get 444.
Take the next digit (4) from the dividend and append it to 444, then repeat: 4444 / 993

Step 6:
4444 divided by 993 is 4 with a remainder of 472.
The next digit of our result is 4. 
Result so far: 424.0
Subtract 3972 from 4444 to get 472.
Take the next digit (0) from the dividend and append it to 472, then repeat: 4720 / 993

Advancing to step 7:
993 goes into 4720 4 times with a remainder of 748.
The number 4 becomes the next digit in our result. 
Result so far: 4244.0
Subtracting 3972 from 4720 leaves us with 748.
Bring next digit (8) of the dividend behind the 748 and repeat the process: 7488 / 993

Going ahead to step 8:
993 goes into 7488 7 times with a remainder of 537.
Put 7 as the next digit of the answer. 
Result so far: 42447.0
The remainder is 537 after subtracting 6951 from 7488.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5370, and continue the process.

On to step 9:
5370 divided by 993 is 5 with a remainder of 405.
The number 5 becomes the next digit in our result. 
Result so far: 42447.5
Subtracting 4965 from 5370 leaves us with 405.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4050, and continue the process.

Advancing to step 10:
4050 divided by 993 is 4 with a remainder of 78.
The next digit of our result is 4. 
Result so far: 42447.54
The remainder is 78 after subtracting 3972 from 4050.
Since there are no more digits in the dividend, we add a zero to the remainder making it 780, and continue the process.

Let's proceed to step 11:
The number 993 fits into 780 0 times, leaving a remainder of 780.
Record the quotient 0 as the next digit in the result. 
Result so far: 42447.54
Subtract 0 from 780 to get 780.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7800, and continue the process.

Step 12:
7800 divided by 993 is 7 with a remainder of 849.
The next digit of our result is 7. 
Result so far: 42447.5407
Subtracting 6951 from 7800 leaves us with 849.
Since there are no more digits in the dividend, we add a zero to the remainder making it 8490, and continue the process.

Advancing to step 13:
993 goes into 8490 8 times with a remainder of 546.
Use 8 as the next digit of our solution. 
Result so far: 42447.54078
Deduct 7944 from 8490 and we're left with 546.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5460, and continue the process.

Let's proceed to step 14:
The number 993 fits into 5460 5 times, leaving a remainder of 495.
Record the quotient 5 as the next digit in the result. 
Result so far: 42447.540785
Subtracting 4965 from 5460 leaves us with 495.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4950, and continue the process.

Let's proceed to step 15:
The number 993 fits into 4950 4 times, leaving a remainder of 978.
The next digit of our result is 4. 
Result so far: 42447.5407854
The remainder is 978 after subtracting 3972 from 4950.
Since there are no more digits in the dividend, we add a zero to the remainder making it 9780, and continue the process.

Advancing to step 16:
993 can be fit into 9780 9 times, resulting in a remainder of 843.
The number 9 becomes the next digit in our result. 
Result so far: 42447.54078549
If we subtract 8937 from 9780, we get 843.
Since there are no more digits in the dividend, we add a zero to the remainder making it 8430, and continue the process.

Our division results in 42447.54078549 with a remaining 8.43e-07.