We look at the division of 380459 by 99 
The aim is to understand the frequency of 99 in 380459.

On to step 1:
3 divided by 99 is 0 with a remainder of 3.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 3 and we're left with 3.
Grab the next digit (8) from the dividend, add it to 3, then carry on: 38 / 99

Moving on to step 2:
99 goes into 38 0 times with a remainder of 38.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we take 0 away from 38, we end up with 38.
Include the next digit (0) from the dividend after 38, then repeat: 380 / 99

Moving on to step 3:
380 divided by 99 is 3 with a remainder of 83.
Use 3 as the next digit of our solution. 
Result so far: 3.0
Subtract 297 from 380 to get 83.
Bring next digit (4) of the dividend behind the 83 and repeat the process: 834 / 99

Step 4:
If we divide 834 by 99, we get 8 and a remainder of 42.
Put 8 as the next digit of the answer. 
Result so far: 38.0
Deduct 792 from 834 and we're left with 42.
Bring next digit (5) of the dividend behind the 42 and repeat the process: 425 / 99

Let's proceed to step 5:
99 goes into 425 4 times with a remainder of 29.
Use 4 as the next digit of our solution. 
Result so far: 384.0
If we subtract 396 from 425, we get 29.
Grab the next digit (9) from the dividend, add it to 29, then carry on: 299 / 99

Step 6:
When dividing 299 by 99, we get 3 with a remainder of 2.
Use 3 as the next digit of our solution. 
Result so far: 3843.0
Subtract 297 from 299 to get 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Moving on to step 7:
When dividing 20 by 99, we get 0 with a remainder of 20.
Put 0 as the next digit of the answer. 
Result so far: 3843.0
Deduct 0 from 20 and we're left with 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

On to step 8:
If we divide 200 by 99, we get 2 and a remainder of 2.
The next digit of our result is 2. 
Result so far: 3843.02
The remainder is 2 after subtracting 198 from 200.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

On to step 9:
When dividing 20 by 99, we get 0 with a remainder of 20.
The number 0 becomes the next digit in our result. 
Result so far: 3843.02
Deduct 0 from 20 and we're left with 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Moving on to step 10:
99 goes into 200 2 times with a remainder of 2.
The next digit of our result is 2. 
Result so far: 3843.0202
Deduct 198 from 200 and we're left with 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Advancing to step 11:
The number 99 fits into 20 0 times, leaving a remainder of 20.
Write down 0 as next digit of the result. 
Result so far: 3843.0202
Subtracting 0 from 20 leaves us with 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Let's proceed to step 12:
If we divide 200 by 99, we get 2 and a remainder of 2.
The next digit of our result is 2. 
Result so far: 3843.020202
Deduct 198 from 200 and we're left with 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Going ahead to step 13:
99 goes into 20 0 times with a remainder of 20.
The number 0 becomes the next digit in our result. 
Result so far: 3843.020202
Subtract 0 from 20 to get 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Going ahead to step 14:
99 can be fit into 200 2 times, resulting in a remainder of 2.
Write down 2 as next digit of the result. 
Result so far: 3843.02020202
Subtract 198 from 200 to get 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Our division results in 3843.02020202 with a remaining 2e-09.