516565 divided by 99 
The aim is to understand the frequency of 99 in 516565.

Let's proceed to step 1:
99 goes into 5 0 times with a remainder of 5.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 5, we end up with 5.
Take the next digit (1) from the dividend and append it to 5, then repeat: 51 / 99

Advancing to step 2:
When dividing 51 by 99, we get 0 with a remainder of 51.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 51 after subtracting 0 from 51.
Include the next digit (6) from the dividend after 51, then repeat: 516 / 99

Step 3:
99 goes into 516 5 times with a remainder of 21.
Use 5 as the next digit of our solution. 
Result so far: 5.0
Subtracting 495 from 516 leaves us with 21.
Fetch the next digit (5) from the dividend, attach it to 21 and continue: 215 / 99

Step 4:
When dividing 215 by 99, we get 2 with a remainder of 17.
The number 2 becomes the next digit in our result. 
Result so far: 52.0
The remainder is 17 after subtracting 198 from 215.
Take the next digit (6) from the dividend and append it to 17, then repeat: 176 / 99

Moving on to step 5:
The number 99 fits into 176 1 times, leaving a remainder of 77.
Put 1 as the next digit of the answer. 
Result so far: 521.0
Subtracting 99 from 176 leaves us with 77.
Append the next digit (5) from the dividend to 77 and continue with: 775 / 99

Step 6:
99 goes into 775 7 times with a remainder of 82.
Record the quotient 7 as the next digit in the result. 
Result so far: 5217.0
Deduct 693 from 775 and we're left with 82.
Since there are no more digits in the dividend, we add a zero to the remainder making it 820, and continue the process.

Going ahead to step 7:
The number 99 fits into 820 8 times, leaving a remainder of 28.
Use 8 as the next digit of our solution. 
Result so far: 5217.8
Deduct 792 from 820 and we're left with 28.
Since there are no more digits in the dividend, we add a zero to the remainder making it 280, and continue the process.

Moving on to step 8:
280 divided by 99 is 2 with a remainder of 82.
The next digit of our result is 2. 
Result so far: 5217.82
If we take 198 away from 280, we end up with 82.
Since there are no more digits in the dividend, we add a zero to the remainder making it 820, and continue the process.

Step 9:
The number 99 fits into 820 8 times, leaving a remainder of 28.
Write down 8 as next digit of the result. 
Result so far: 5217.828
The remainder is 28 after subtracting 792 from 820.
Since there are no more digits in the dividend, we add a zero to the remainder making it 280, and continue the process.

On to step 10:
If we divide 280 by 99, we get 2 and a remainder of 82.
Put 2 as the next digit of the answer. 
Result so far: 5217.8282
Subtract 198 from 280 to get 82.
Since there are no more digits in the dividend, we add a zero to the remainder making it 820, and continue the process.

Step 11:
820 divided by 99 is 8 with a remainder of 28.
The next digit of our result is 8. 
Result so far: 5217.82828
Deduct 792 from 820 and we're left with 28.
Since there are no more digits in the dividend, we add a zero to the remainder making it 280, and continue the process.

Going ahead to step 12:
280 divided by 99 is 2 with a remainder of 82.
Write down 2 as next digit of the result. 
Result so far: 5217.828282
If we subtract 198 from 280, we get 82.
Since there are no more digits in the dividend, we add a zero to the remainder making it 820, and continue the process.

Step 13:
When dividing 820 by 99, we get 8 with a remainder of 28.
Use 8 as the next digit of our solution. 
Result so far: 5217.8282828
If we take 792 away from 820, we end up with 28.
Since there are no more digits in the dividend, we add a zero to the remainder making it 280, and continue the process.

Let's proceed to step 14:
The number 99 fits into 280 2 times, leaving a remainder of 82.
The number 2 becomes the next digit in our result. 
Result so far: 5217.82828282
Subtracting 198 from 280 leaves us with 82.
Since there are no more digits in the dividend, we add a zero to the remainder making it 820, and continue the process.

The final outcome is 5217.82828282, with a leftover of 8.2e-08.