Let's divide 75789629 by 999
The aim is to understand the frequency of 999 in 75789629.

Moving on to step 1:
If we divide 7 by 999, we get 0 and a remainder of 7.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 7, we get 7.
Take the next digit (5) from the dividend and append it to 7, then repeat: 75 / 999

Moving on to step 2:
75 divided by 999 is 0 with a remainder of 75.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 75 to get 75.
Grab the next digit (7) from the dividend, add it to 75, then carry on: 757 / 999

Let's proceed to step 3:
If we divide 757 by 999, we get 0 and a remainder of 757.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 757 to get 757.
Fetch the next digit (8) from the dividend, attach it to 757 and continue: 7578 / 999

On to step 4:
999 goes into 7578 7 times with a remainder of 585.
The next digit of our result is 7. 
Result so far: 7.0
Deduct 6993 from 7578 and we're left with 585.
Take the next digit (9) from the dividend and append it to 585, then repeat: 5859 / 999

Step 5:
999 can be fit into 5859 5 times, resulting in a remainder of 864.
Use 5 as the next digit of our solution. 
Result so far: 75.0
The remainder is 864 after subtracting 4995 from 5859.
Take the next digit (6) from the dividend and append it to 864, then repeat: 8646 / 999

On to step 6:
The number 999 fits into 8646 8 times, leaving a remainder of 654.
Put 8 as the next digit of the answer. 
Result so far: 758.0
Deduct 7992 from 8646 and we're left with 654.
Fetch the next digit (2) from the dividend, attach it to 654 and continue: 6542 / 999

Advancing to step 7:
999 can be fit into 6542 6 times, resulting in a remainder of 548.
Write down 6 as next digit of the result. 
Result so far: 7586.0
If we subtract 5994 from 6542, we get 548.
Append the next digit (9) from the dividend to 548 and continue with: 5489 / 999

Let's proceed to step 8:
5489 divided by 999 is 5 with a remainder of 494.
Use 5 as the next digit of our solution. 
Result so far: 75865.0
Deduct 4995 from 5489 and we're left with 494.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4940, and continue the process.

Going ahead to step 9:
The number 999 fits into 4940 4 times, leaving a remainder of 944.
The number 4 becomes the next digit in our result. 
Result so far: 75865.4
Subtracting 3996 from 4940 leaves us with 944.
Since there are no more digits in the dividend, we add a zero to the remainder making it 9440, and continue the process.

Step 10:
The number 999 fits into 9440 9 times, leaving a remainder of 449.
The next digit of our result is 9. 
Result so far: 75865.49
Deduct 8991 from 9440 and we're left with 449.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4490, and continue the process.

Going ahead to step 11:
When dividing 4490 by 999, we get 4 with a remainder of 494.
The next digit of our result is 4. 
Result so far: 75865.494
Deduct 3996 from 4490 and we're left with 494.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4940, and continue the process.

Advancing to step 12:
999 can be fit into 4940 4 times, resulting in a remainder of 944.
The next digit of our result is 4. 
Result so far: 75865.4944
Deduct 3996 from 4940 and we're left with 944.
Since there are no more digits in the dividend, we add a zero to the remainder making it 9440, and continue the process.

After the division, we end up with 75865.4944 and a remainder of 0.00944.