We look at the division of 335404 by 99 
The aim is to understand the frequency of 99 in 335404.

Advancing to step 1:
99 goes into 3 0 times with a remainder of 3.
The next digit of our result is 0. 
Result so far: 0.0
Subtract 0 from 3 to get 3.
Include the next digit (3) from the dividend after 3, then repeat: 33 / 99

Advancing to step 2:
The number 99 fits into 33 0 times, leaving a remainder of 33.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtract 0 from 33 to get 33.
Grab the next digit (5) from the dividend, add it to 33, then carry on: 335 / 99

Let's proceed to step 3:
If we divide 335 by 99, we get 3 and a remainder of 38.
Record the quotient 3 as the next digit in the result. 
Result so far: 3.0
Subtract 297 from 335 to get 38.
Bring next digit (4) of the dividend behind the 38 and repeat the process: 384 / 99

On to step 4:
When dividing 384 by 99, we get 3 with a remainder of 87.
Write down 3 as next digit of the result. 
Result so far: 33.0
Subtract 297 from 384 to get 87.
Take the next digit (0) from the dividend and append it to 87, then repeat: 870 / 99

Advancing to step 5:
If we divide 870 by 99, we get 8 and a remainder of 78.
Put 8 as the next digit of the answer. 
Result so far: 338.0
Subtracting 792 from 870 leaves us with 78.
Grab the next digit (4) from the dividend, add it to 78, then carry on: 784 / 99

On to step 6:
The number 99 fits into 784 7 times, leaving a remainder of 91.
The next digit of our result is 7. 
Result so far: 3387.0
Deduct 693 from 784 and we're left with 91.
Since there are no more digits in the dividend, we add a zero to the remainder making it 910, and continue the process.

On to step 7:
99 goes into 910 9 times with a remainder of 19.
Write down 9 as next digit of the result. 
Result so far: 3387.9
Deduct 891 from 910 and we're left with 19.
Since there are no more digits in the dividend, we add a zero to the remainder making it 190, and continue the process.

Let's proceed to step 8:
190 divided by 99 is 1 with a remainder of 91.
Use 1 as the next digit of our solution. 
Result so far: 3387.91
The remainder is 91 after subtracting 99 from 190.
Since there are no more digits in the dividend, we add a zero to the remainder making it 910, and continue the process.

Going ahead to step 9:
The number 99 fits into 910 9 times, leaving a remainder of 19.
Write down 9 as next digit of the result. 
Result so far: 3387.919
The remainder is 19 after subtracting 891 from 910.
Since there are no more digits in the dividend, we add a zero to the remainder making it 190, and continue the process.

Let's proceed to step 10:
If we divide 190 by 99, we get 1 and a remainder of 91.
Write down 1 as next digit of the result. 
Result so far: 3387.9191
If we take 99 away from 190, we end up with 91.
Since there are no more digits in the dividend, we add a zero to the remainder making it 910, and continue the process.

On to step 11:
The number 99 fits into 910 9 times, leaving a remainder of 19.
The number 9 becomes the next digit in our result. 
Result so far: 3387.91919
Subtracting 891 from 910 leaves us with 19.
Since there are no more digits in the dividend, we add a zero to the remainder making it 190, and continue the process.

Let's proceed to step 12:
99 goes into 190 1 times with a remainder of 91.
Record the quotient 1 as the next digit in the result. 
Result so far: 3387.919191
If we subtract 99 from 190, we get 91.
Since there are no more digits in the dividend, we add a zero to the remainder making it 910, and continue the process.

Step 13:
99 can be fit into 910 9 times, resulting in a remainder of 19.
Write down 9 as next digit of the result. 
Result so far: 3387.9191919
If we take 891 away from 910, we end up with 19.
Since there are no more digits in the dividend, we add a zero to the remainder making it 190, and continue the process.

Step 14:
When dividing 190 by 99, we get 1 with a remainder of 91.
The next digit of our result is 1. 
Result so far: 3387.91919191
If we subtract 99 from 190, we get 91.
Since there are no more digits in the dividend, we add a zero to the remainder making it 910, and continue the process.

Our division results in 3387.91919191 with a remaining 9.1e-08.