81961200 divided by 999 
The aim is to understand the frequency of 999 in 81961200.

Moving on to step 1:
If we divide 8 by 999, we get 0 and a remainder of 8.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 8 leaves us with 8.
Append the next digit (1) from the dividend to 8 and continue with: 81 / 999

Let's proceed to step 2:
81 divided by 999 is 0 with a remainder of 81.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we subtract 0 from 81, we get 81.
Fetch the next digit (9) from the dividend, attach it to 81 and continue: 819 / 999

Let's proceed to step 3:
999 goes into 819 0 times with a remainder of 819.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 819 to get 819.
Include the next digit (6) from the dividend after 819, then repeat: 8196 / 999

Going ahead to step 4:
The number 999 fits into 8196 8 times, leaving a remainder of 204.
Put 8 as the next digit of the answer. 
Result so far: 8.0
If we subtract 7992 from 8196, we get 204.
Grab the next digit (1) from the dividend, add it to 204, then carry on: 2041 / 999

Let's proceed to step 5:
If we divide 2041 by 999, we get 2 and a remainder of 43.
Put 2 as the next digit of the answer. 
Result so far: 82.0
The remainder is 43 after subtracting 1998 from 2041.
Fetch the next digit (2) from the dividend, attach it to 43 and continue: 432 / 999

Going ahead to step 6:
When dividing 432 by 999, we get 0 with a remainder of 432.
The number 0 becomes the next digit in our result. 
Result so far: 820.0
Subtract 0 from 432 to get 432.
Include the next digit (0) from the dividend after 432, then repeat: 4320 / 999

Going ahead to step 7:
The number 999 fits into 4320 4 times, leaving a remainder of 324.
Write down 4 as next digit of the result. 
Result so far: 8204.0
Subtract 3996 from 4320 to get 324.
Grab the next digit (0) from the dividend, add it to 324, then carry on: 3240 / 999

Advancing to step 8:
999 can be fit into 3240 3 times, resulting in a remainder of 243.
Write down 3 as next digit of the result. 
Result so far: 82043.0
Subtracting 2997 from 3240 leaves us with 243.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2430, and continue the process.

Step 9:
2430 divided by 999 is 2 with a remainder of 432.
Use 2 as the next digit of our solution. 
Result so far: 82043.2
The remainder is 432 after subtracting 1998 from 2430.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4320, and continue the process.

Going ahead to step 10:
The number 999 fits into 4320 4 times, leaving a remainder of 324.
The next digit of our result is 4. 
Result so far: 82043.24
The remainder is 324 after subtracting 3996 from 4320.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3240, and continue the process.

Advancing to step 11:
When dividing 3240 by 999, we get 3 with a remainder of 243.
The next digit of our result is 3. 
Result so far: 82043.243
Subtract 2997 from 3240 to get 243.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2430, and continue the process.

Step 12:
When dividing 2430 by 999, we get 2 with a remainder of 432.
Use 2 as the next digit of our solution. 
Result so far: 82043.2432
If we take 1998 away from 2430, we end up with 432.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4320, and continue the process.

Going ahead to step 13:
If we divide 4320 by 999, we get 4 and a remainder of 324.
Record the quotient 4 as the next digit in the result. 
Result so far: 82043.24324
If we subtract 3996 from 4320, we get 324.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3240, and continue the process.

Going ahead to step 14:
999 can be fit into 3240 3 times, resulting in a remainder of 243.
Write down 3 as next digit of the result. 
Result so far: 82043.243243
If we subtract 2997 from 3240, we get 243.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2430, and continue the process.

Moving on to step 15:
999 can be fit into 2430 2 times, resulting in a remainder of 432.
Write down 2 as next digit of the result. 
Result so far: 82043.2432432
Deduct 1998 from 2430 and we're left with 432.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4320, and continue the process.

Going ahead to step 16:
If we divide 4320 by 999, we get 4 and a remainder of 324.
Write down 4 as next digit of the result. 
Result so far: 82043.24324324
Subtract 3996 from 4320 to get 324.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3240, and continue the process.

In conclusion, the division gives 82043.24324324 with a balance of 3.24e-07.