We look at the division of 99489438 by 999 
The aim is to understand the frequency of 999 in 99489438.

On to step 1:
9 divided by 999 is 0 with a remainder of 9.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we take 0 away from 9, we end up with 9.
Fetch the next digit (9) from the dividend, attach it to 9 and continue: 99 / 999

Let's proceed to step 2:
999 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
The remainder is 99 after subtracting 0 from 99.
Append the next digit (4) from the dividend to 99 and continue with: 994 / 999

Step 3:
999 goes into 994 0 times with a remainder of 994.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 994 to get 994.
Append the next digit (8) from the dividend to 994 and continue with: 9948 / 999

Let's proceed to step 4:
The number 999 fits into 9948 9 times, leaving a remainder of 957.
The number 9 becomes the next digit in our result. 
Result so far: 9.0
Subtract 8991 from 9948 to get 957.
Grab the next digit (9) from the dividend, add it to 957, then carry on: 9579 / 999

On to step 5:
If we divide 9579 by 999, we get 9 and a remainder of 588.
Record the quotient 9 as the next digit in the result. 
Result so far: 99.0
Deduct 8991 from 9579 and we're left with 588.
Append the next digit (4) from the dividend to 588 and continue with: 5884 / 999

Going ahead to step 6:
5884 divided by 999 is 5 with a remainder of 889.
The next digit of our result is 5. 
Result so far: 995.0
The remainder is 889 after subtracting 4995 from 5884.
Take the next digit (3) from the dividend and append it to 889, then repeat: 8893 / 999

Going ahead to step 7:
If we divide 8893 by 999, we get 8 and a remainder of 901.
Record the quotient 8 as the next digit in the result. 
Result so far: 9958.0
Subtracting 7992 from 8893 leaves us with 901.
Grab the next digit (8) from the dividend, add it to 901, then carry on: 9018 / 999

Moving on to step 8:
The number 999 fits into 9018 9 times, leaving a remainder of 27.
Put 9 as the next digit of the answer. 
Result so far: 99589.0
Subtract 8991 from 9018 to get 27.
Since there are no more digits in the dividend, we add a zero to the remainder making it 270, and continue the process.

Going ahead to step 9:
999 goes into 270 0 times with a remainder of 270.
The next digit of our result is 0. 
Result so far: 99589.0
If we subtract 0 from 270, we get 270.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2700, and continue the process.

Moving on to step 10:
999 can be fit into 2700 2 times, resulting in a remainder of 702.
Put 2 as the next digit of the answer. 
Result so far: 99589.02
If we take 1998 away from 2700, we end up with 702.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7020, and continue the process.

Going ahead to step 11:
999 goes into 7020 7 times with a remainder of 27.
Record the quotient 7 as the next digit in the result. 
Result so far: 99589.027
The remainder is 27 after subtracting 6993 from 7020.
Since there are no more digits in the dividend, we add a zero to the remainder making it 270, and continue the process.

Let's proceed to step 12:
999 can be fit into 270 0 times, resulting in a remainder of 270.
Write down 0 as next digit of the result. 
Result so far: 99589.027
Deduct 0 from 270 and we're left with 270.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2700, and continue the process.

Let's proceed to step 13:
999 can be fit into 2700 2 times, resulting in a remainder of 702.
The number 2 becomes the next digit in our result. 
Result so far: 99589.02702
Subtracting 1998 from 2700 leaves us with 702.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7020, and continue the process.

Going ahead to step 14:
999 goes into 7020 7 times with a remainder of 27.
Record the quotient 7 as the next digit in the result. 
Result so far: 99589.027027
Subtracting 6993 from 7020 leaves us with 27.
Since there are no more digits in the dividend, we add a zero to the remainder making it 270, and continue the process.

Step 15:
The number 999 fits into 270 0 times, leaving a remainder of 270.
The number 0 becomes the next digit in our result. 
Result so far: 99589.027027
The remainder is 270 after subtracting 0 from 270.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2700, and continue the process.

Moving on to step 16:
999 can be fit into 2700 2 times, resulting in a remainder of 702.
Record the quotient 2 as the next digit in the result. 
Result so far: 99589.02702702
The remainder is 702 after subtracting 1998 from 2700.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7020, and continue the process.

In conclusion, the division gives 99589.02702702 with a balance of 7.02e-07.