Let's divide 998808 by 15
The aim is to understand the frequency of 15 in 998808.

Going ahead to step 1:
15 goes into 9 0 times with a remainder of 9.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we take 0 away from 9, we end up with 9.
Grab the next digit (9) from the dividend, add it to 9, then carry on: 99 / 15

On to step 2:
When dividing 99 by 15, we get 6 with a remainder of 9.
Use 6 as the next digit of our solution. 
Result so far: 6.0
If we subtract 90 from 99, we get 9.
Grab the next digit (8) from the dividend, add it to 9, then carry on: 98 / 15

Moving on to step 3:
15 can be fit into 98 6 times, resulting in a remainder of 8.
Use 6 as the next digit of our solution. 
Result so far: 66.0
If we take 90 away from 98, we end up with 8.
Grab the next digit (8) from the dividend, add it to 8, then carry on: 88 / 15

Going ahead to step 4:
15 goes into 88 5 times with a remainder of 13.
Put 5 as the next digit of the answer. 
Result so far: 665.0
If we take 75 away from 88, we end up with 13.
Take the next digit (0) from the dividend and append it to 13, then repeat: 130 / 15

Step 5:
When dividing 130 by 15, we get 8 with a remainder of 10.
Put 8 as the next digit of the answer. 
Result so far: 6658.0
Deduct 120 from 130 and we're left with 10.
Take the next digit (8) from the dividend and append it to 10, then repeat: 108 / 15

Advancing to step 6:
The number 15 fits into 108 7 times, leaving a remainder of 3.
Write down 7 as next digit of the result. 
Result so far: 66587.0
If we take 105 away from 108, we end up with 3.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

Let's proceed to step 7:
15 goes into 30 2 times with a remainder of 0.
Record the quotient 2 as the next digit in the result. 
Result so far: 66587.2
If we take 30 away from 30, 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.

Advancing to step 8:
The number 15 fits into 0 0 times, leaving a remainder of 0.
Write down 0 as next digit of the result. 
Result so far: 66587.2
The remainder is 0 after subtracting 0 from 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Moving on to step 9:
0 divided by 15 is 0 with a remainder of 0.
Write down 0 as next digit of the result. 
Result so far: 66587.2
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.

In conclusion, the division gives 66587.2 with a balance of 0.0.