8643735 divided by 999 
The aim is to understand the frequency of 999 in 8643735.

Advancing to step 1:
When dividing 8 by 999, we get 0 with a remainder of 8.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 8 to get 8.
Take the next digit (6) from the dividend and append it to 8, then repeat: 86 / 999

Let's proceed to step 2:
999 goes into 86 0 times with a remainder of 86.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 86 and we're left with 86.
Take the next digit (4) from the dividend and append it to 86, then repeat: 864 / 999

Moving on to step 3:
999 goes into 864 0 times with a remainder of 864.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 864 leaves us with 864.
Take the next digit (3) from the dividend and append it to 864, then repeat: 8643 / 999

Moving on to step 4:
8643 divided by 999 is 8 with a remainder of 651.
The number 8 becomes the next digit in our result. 
Result so far: 8.0
Deduct 7992 from 8643 and we're left with 651.
Bring next digit (7) of the dividend behind the 651 and repeat the process: 6517 / 999

Let's proceed to step 5:
When dividing 6517 by 999, we get 6 with a remainder of 523.
Record the quotient 6 as the next digit in the result. 
Result so far: 86.0
The remainder is 523 after subtracting 5994 from 6517.
Grab the next digit (3) from the dividend, add it to 523, then carry on: 5233 / 999

Step 6:
When dividing 5233 by 999, we get 5 with a remainder of 238.
The next digit of our result is 5. 
Result so far: 865.0
Deduct 4995 from 5233 and we're left with 238.
Take the next digit (5) from the dividend and append it to 238, then repeat: 2385 / 999

On to step 7:
2385 divided by 999 is 2 with a remainder of 387.
The number 2 becomes the next digit in our result. 
Result so far: 8652.0
If we take 1998 away from 2385, we end up with 387.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3870, and continue the process.

Step 8:
When dividing 3870 by 999, we get 3 with a remainder of 873.
The number 3 becomes the next digit in our result. 
Result so far: 8652.3
The remainder is 873 after subtracting 2997 from 3870.
Since there are no more digits in the dividend, we add a zero to the remainder making it 8730, and continue the process.

Step 9:
If we divide 8730 by 999, we get 8 and a remainder of 738.
Write down 8 as next digit of the result. 
Result so far: 8652.38
The remainder is 738 after subtracting 7992 from 8730.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7380, and continue the process.

Moving on to step 10:
The number 999 fits into 7380 7 times, leaving a remainder of 387.
The number 7 becomes the next digit in our result. 
Result so far: 8652.387
Subtract 6993 from 7380 to get 387.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3870, and continue the process.

Let's proceed to step 11:
999 goes into 3870 3 times with a remainder of 873.
Use 3 as the next digit of our solution. 
Result so far: 8652.3873
If we take 2997 away from 3870, we end up with 873.
Since there are no more digits in the dividend, we add a zero to the remainder making it 8730, and continue the process.

Moving on to step 12:
8730 divided by 999 is 8 with a remainder of 738.
The next digit of our result is 8. 
Result so far: 8652.38738
The remainder is 738 after subtracting 7992 from 8730.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7380, and continue the process.

Let's proceed to step 13:
The number 999 fits into 7380 7 times, leaving a remainder of 387.
Write down 7 as next digit of the result. 
Result so far: 8652.387387
The remainder is 387 after subtracting 6993 from 7380.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3870, and continue the process.

Advancing to step 14:
The number 999 fits into 3870 3 times, leaving a remainder of 873.
The number 3 becomes the next digit in our result. 
Result so far: 8652.3873873
Subtract 2997 from 3870 to get 873.
Since there are no more digits in the dividend, we add a zero to the remainder making it 8730, and continue the process.

Step 15:
999 can be fit into 8730 8 times, resulting in a remainder of 738.
Put 8 as the next digit of the answer. 
Result so far: 8652.38738738
If we subtract 7992 from 8730, we get 738.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7380, and continue the process.

In conclusion, the division gives 8652.38738738 with a balance of 7.38e-07.