42605 divided by 99 
The aim is to understand the frequency of 99 in 42605.

Step 1:
If we divide 4 by 99, we get 0 and a remainder of 4.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtract 0 from 4 to get 4.
Grab the next digit (2) from the dividend, add it to 4, then carry on: 42 / 99

On to step 2:
99 can be fit into 42 0 times, resulting in a remainder of 42.
The next digit of our result is 0. 
Result so far: 0.0
Subtracting 0 from 42 leaves us with 42.
Take the next digit (6) from the dividend and append it to 42, then repeat: 426 / 99

Let's proceed to step 3:
The number 99 fits into 426 4 times, leaving a remainder of 30.
Write down 4 as next digit of the result. 
Result so far: 4.0
If we take 396 away from 426, we end up with 30.
Fetch the next digit (0) from the dividend, attach it to 30 and continue: 300 / 99

Moving on to step 4:
When dividing 300 by 99, we get 3 with a remainder of 3.
Use 3 as the next digit of our solution. 
Result so far: 43.0
The remainder is 3 after subtracting 297 from 300.
Grab the next digit (5) from the dividend, add it to 3, then carry on: 35 / 99

On to step 5:
35 divided by 99 is 0 with a remainder of 35.
Put 0 as the next digit of the answer. 
Result so far: 430.0
The remainder is 35 after subtracting 0 from 35.
Since there are no more digits in the dividend, we add a zero to the remainder making it 350, and continue the process.

On to step 6:
The number 99 fits into 350 3 times, leaving a remainder of 53.
Put 3 as the next digit of the answer. 
Result so far: 430.3
Subtract 297 from 350 to get 53.
Since there are no more digits in the dividend, we add a zero to the remainder making it 530, and continue the process.

On to step 7:
The number 99 fits into 530 5 times, leaving a remainder of 35.
Write down 5 as next digit of the result. 
Result so far: 430.35
If we subtract 495 from 530, we get 35.
Since there are no more digits in the dividend, we add a zero to the remainder making it 350, and continue the process.

Going ahead to step 8:
The number 99 fits into 350 3 times, leaving a remainder of 53.
Use 3 as the next digit of our solution. 
Result so far: 430.353
If we subtract 297 from 350, we get 53.
Since there are no more digits in the dividend, we add a zero to the remainder making it 530, and continue the process.

Moving on to step 9:
530 divided by 99 is 5 with a remainder of 35.
Use 5 as the next digit of our solution. 
Result so far: 430.3535
If we take 495 away from 530, we end up with 35.
Since there are no more digits in the dividend, we add a zero to the remainder making it 350, and continue the process.

Advancing to step 10:
99 can be fit into 350 3 times, resulting in a remainder of 53.
The next digit of our result is 3. 
Result so far: 430.35353
If we take 297 away from 350, we end up with 53.
Since there are no more digits in the dividend, we add a zero to the remainder making it 530, and continue the process.

Moving on to step 11:
99 goes into 530 5 times with a remainder of 35.
Put 5 as the next digit of the answer. 
Result so far: 430.353535
Deduct 495 from 530 and we're left with 35.
Since there are no more digits in the dividend, we add a zero to the remainder making it 350, and continue the process.

Let's proceed to step 12:
When dividing 350 by 99, we get 3 with a remainder of 53.
Put 3 as the next digit of the answer. 
Result so far: 430.3535353
Subtracting 297 from 350 leaves us with 53.
Since there are no more digits in the dividend, we add a zero to the remainder making it 530, and continue the process.

Going ahead to step 13:
99 goes into 530 5 times with a remainder of 35.
Use 5 as the next digit of our solution. 
Result so far: 430.35353535
Subtract 495 from 530 to get 35.
Since there are no more digits in the dividend, we add a zero to the remainder making it 350, and continue the process.

The final result is 430.35353535 with a remainder of 3.5e-08.