We look at the division of 152404 by 99 
The aim is to understand the frequency of 99 in 152404.

Moving on to step 1:
99 goes into 1 0 times with a remainder of 1.
Use 0 as the next digit of our solution. 
Result so far: 0.0
The remainder is 1 after subtracting 0 from 1.
Take the next digit (5) from the dividend and append it to 1, then repeat: 15 / 99

Moving on to step 2:
The number 99 fits into 15 0 times, leaving a remainder of 15.
Write down 0 as next digit of the result. 
Result so far: 0.0
Deduct 0 from 15 and we're left with 15.
Take the next digit (2) from the dividend and append it to 15, then repeat: 152 / 99

Going ahead to step 3:
The number 99 fits into 152 1 times, leaving a remainder of 53.
The next digit of our result is 1. 
Result so far: 1.0
If we subtract 99 from 152, we get 53.
Fetch the next digit (4) from the dividend, attach it to 53 and continue: 534 / 99

Step 4:
99 goes into 534 5 times with a remainder of 39.
Put 5 as the next digit of the answer. 
Result so far: 15.0
If we subtract 495 from 534, we get 39.
Take the next digit (0) from the dividend and append it to 39, then repeat: 390 / 99

On to step 5:
When dividing 390 by 99, we get 3 with a remainder of 93.
Record the quotient 3 as the next digit in the result. 
Result so far: 153.0
Subtract 297 from 390 to get 93.
Grab the next digit (4) from the dividend, add it to 93, then carry on: 934 / 99

Step 6:
99 can be fit into 934 9 times, resulting in a remainder of 43.
The next digit of our result is 9. 
Result so far: 1539.0
The remainder is 43 after subtracting 891 from 934.
Since there are no more digits in the dividend, we add a zero to the remainder making it 430, and continue the process.

Advancing to step 7:
99 goes into 430 4 times with a remainder of 34.
Write down 4 as next digit of the result. 
Result so far: 1539.4
Subtracting 396 from 430 leaves us with 34.
Since there are no more digits in the dividend, we add a zero to the remainder making it 340, and continue the process.

Step 8:
If we divide 340 by 99, we get 3 and a remainder of 43.
The next digit of our result is 3. 
Result so far: 1539.43
Subtracting 297 from 340 leaves us with 43.
Since there are no more digits in the dividend, we add a zero to the remainder making it 430, and continue the process.

Step 9:
The number 99 fits into 430 4 times, leaving a remainder of 34.
Write down 4 as next digit of the result. 
Result so far: 1539.434
Deduct 396 from 430 and we're left with 34.
Since there are no more digits in the dividend, we add a zero to the remainder making it 340, and continue the process.

On to step 10:
340 divided by 99 is 3 with a remainder of 43.
The number 3 becomes the next digit in our result. 
Result so far: 1539.4343
If we take 297 away from 340, we end up with 43.
Since there are no more digits in the dividend, we add a zero to the remainder making it 430, and continue the process.

Let's proceed to step 11:
The number 99 fits into 430 4 times, leaving a remainder of 34.
Write down 4 as next digit of the result. 
Result so far: 1539.43434
If we take 396 away from 430, we end up with 34.
Since there are no more digits in the dividend, we add a zero to the remainder making it 340, and continue the process.

Let's proceed to step 12:
If we divide 340 by 99, we get 3 and a remainder of 43.
Put 3 as the next digit of the answer. 
Result so far: 1539.434343
Subtract 297 from 340 to get 43.
Since there are no more digits in the dividend, we add a zero to the remainder making it 430, and continue the process.

Step 13:
When dividing 430 by 99, we get 4 with a remainder of 34.
The number 4 becomes the next digit in our result. 
Result so far: 1539.4343434
The remainder is 34 after subtracting 396 from 430.
Since there are no more digits in the dividend, we add a zero to the remainder making it 340, and continue the process.

Step 14:
The number 99 fits into 340 3 times, leaving a remainder of 43.
Put 3 as the next digit of the answer. 
Result so far: 1539.43434343
Subtract 297 from 340 to get 43.
Since there are no more digits in the dividend, we add a zero to the remainder making it 430, and continue the process.

After the division, we end up with 1539.43434343 and a remainder of 4.3e-08.