99729 divided by 18 
The aim is to understand the frequency of 18 in 99729.

Let's proceed to step 1:
18 can be fit into 9 0 times, resulting in a remainder of 9.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
The remainder is 9 after subtracting 0 from 9.
Fetch the next digit (9) from the dividend, attach it to 9 and continue: 99 / 18

Moving on to step 2:
18 goes into 99 5 times with a remainder of 9.
Use 5 as the next digit of our solution. 
Result so far: 5.0
Deduct 90 from 99 and we're left with 9.
Grab the next digit (7) from the dividend, add it to 9, then carry on: 97 / 18

Let's proceed to step 3:
18 goes into 97 5 times with a remainder of 7.
Use 5 as the next digit of our solution. 
Result so far: 55.0
The remainder is 7 after subtracting 90 from 97.
Bring next digit (2) of the dividend behind the 7 and repeat the process: 72 / 18

On to step 4:
The number 18 fits into 72 4 times, leaving a remainder of 0.
The number 4 becomes the next digit in our result. 
Result so far: 554.0
Deduct 72 from 72 and we're left with 0.
Grab the next digit (9) from the dividend, add it to 0, then carry on: 9 / 18

Step 5:
9 divided by 18 is 0 with a remainder of 9.
The number 0 becomes the next digit in our result. 
Result so far: 5540.0
Deduct 0 from 9 and we're left with 9.
Since there are no more digits in the dividend, we add a zero to the remainder making it 90, and continue the process.

Step 6:
When dividing 90 by 18, we get 5 with a remainder of 0.
The number 5 becomes the next digit in our result. 
Result so far: 5540.5
The remainder is 0 after subtracting 90 from 90.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Advancing to step 7:
If we divide 0 by 18, we get 0 and a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 5540.5
If we take 0 away from 0, we end up with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Step 8:
18 can be fit into 0 0 times, resulting in a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 5540.5
Deduct 0 from 0 and we're left with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

The final outcome is 5540.5, with a leftover of 0.0.