We look at the division of 907490 by 99 
The aim is to understand the frequency of 99 in 907490.

Let's proceed to step 1:
If we divide 9 by 99, we get 0 and a remainder of 9.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 9 to get 9.
Grab the next digit (0) from the dividend, add it to 9, then carry on: 90 / 99

Moving on to step 2:
99 can be fit into 90 0 times, resulting in a remainder of 90.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 90 to get 90.
Include the next digit (7) from the dividend after 90, then repeat: 907 / 99

On to step 3:
When dividing 907 by 99, we get 9 with a remainder of 16.
Put 9 as the next digit of the answer. 
Result so far: 9.0
If we subtract 891 from 907, we get 16.
Bring next digit (4) of the dividend behind the 16 and repeat the process: 164 / 99

Moving on to step 4:
99 goes into 164 1 times with a remainder of 65.
Put 1 as the next digit of the answer. 
Result so far: 91.0
If we subtract 99 from 164, we get 65.
Take the next digit (9) from the dividend and append it to 65, then repeat: 659 / 99

Let's proceed to step 5:
99 goes into 659 6 times with a remainder of 65.
The next digit of our result is 6. 
Result so far: 916.0
Subtracting 594 from 659 leaves us with 65.
Take the next digit (0) from the dividend and append it to 65, then repeat: 650 / 99

Going ahead to step 6:
The number 99 fits into 650 6 times, leaving a remainder of 56.
The number 6 becomes the next digit in our result. 
Result so far: 9166.0
Deduct 594 from 650 and we're left with 56.
Since there are no more digits in the dividend, we add a zero to the remainder making it 560, and continue the process.

On to step 7:
99 goes into 560 5 times with a remainder of 65.
The next digit of our result is 5. 
Result so far: 9166.5
The remainder is 65 after subtracting 495 from 560.
Since there are no more digits in the dividend, we add a zero to the remainder making it 650, and continue the process.

Moving on to step 8:
99 goes into 650 6 times with a remainder of 56.
Write down 6 as next digit of the result. 
Result so far: 9166.56
The remainder is 56 after subtracting 594 from 650.
Since there are no more digits in the dividend, we add a zero to the remainder making it 560, and continue the process.

Step 9:
The number 99 fits into 560 5 times, leaving a remainder of 65.
Write down 5 as next digit of the result. 
Result so far: 9166.565
Deduct 495 from 560 and we're left with 65.
Since there are no more digits in the dividend, we add a zero to the remainder making it 650, and continue the process.

On to step 10:
The number 99 fits into 650 6 times, leaving a remainder of 56.
Record the quotient 6 as the next digit in the result. 
Result so far: 9166.5656
If we subtract 594 from 650, we get 56.
Since there are no more digits in the dividend, we add a zero to the remainder making it 560, and continue the process.

Let's proceed to step 11:
When dividing 560 by 99, we get 5 with a remainder of 65.
The next digit of our result is 5. 
Result so far: 9166.56565
If we take 495 away from 560, we end up with 65.
Since there are no more digits in the dividend, we add a zero to the remainder making it 650, and continue the process.

Let's proceed to step 12:
99 goes into 650 6 times with a remainder of 56.
The number 6 becomes the next digit in our result. 
Result so far: 9166.565656
Subtracting 594 from 650 leaves us with 56.
Since there are no more digits in the dividend, we add a zero to the remainder making it 560, and continue the process.

Step 13:
560 divided by 99 is 5 with a remainder of 65.
Write down 5 as next digit of the result. 
Result so far: 9166.5656565
The remainder is 65 after subtracting 495 from 560.
Since there are no more digits in the dividend, we add a zero to the remainder making it 650, and continue the process.

Moving on to step 14:
If we divide 650 by 99, we get 6 and a remainder of 56.
Write down 6 as next digit of the result. 
Result so far: 9166.56565656
If we subtract 594 from 650, we get 56.
Since there are no more digits in the dividend, we add a zero to the remainder making it 560, and continue the process.

The final outcome is 9166.56565656, with a leftover of 5.6e-08.