We divide 878118 by 99
The aim is to understand the frequency of 99 in 878118.

Going ahead to step 1:
If we divide 8 by 99, we get 0 and a remainder of 8.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtracting 0 from 8 leaves us with 8.
Grab the next digit (7) from the dividend, add it to 8, then carry on: 87 / 99

Advancing to step 2:
If we divide 87 by 99, we get 0 and a remainder of 87.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 87, we end up with 87.
Append the next digit (8) from the dividend to 87 and continue with: 878 / 99

Step 3:
If we divide 878 by 99, we get 8 and a remainder of 86.
Write down 8 as next digit of the result. 
Result so far: 8.0
Subtracting 792 from 878 leaves us with 86.
Take the next digit (1) from the dividend and append it to 86, then repeat: 861 / 99

Moving on to step 4:
861 divided by 99 is 8 with a remainder of 69.
Write down 8 as next digit of the result. 
Result so far: 88.0
Subtract 792 from 861 to get 69.
Fetch the next digit (1) from the dividend, attach it to 69 and continue: 691 / 99

Moving on to step 5:
99 goes into 691 6 times with a remainder of 97.
Record the quotient 6 as the next digit in the result. 
Result so far: 886.0
If we subtract 594 from 691, we get 97.
Append the next digit (8) from the dividend to 97 and continue with: 978 / 99

Let's proceed to step 6:
99 goes into 978 9 times with a remainder of 87.
The next digit of our result is 9. 
Result so far: 8869.0
Subtract 891 from 978 to get 87.
Since there are no more digits in the dividend, we add a zero to the remainder making it 870, and continue the process.

Advancing to step 7:
99 can be fit into 870 8 times, resulting in a remainder of 78.
Put 8 as the next digit of the answer. 
Result so far: 8869.8
Subtracting 792 from 870 leaves us with 78.
Since there are no more digits in the dividend, we add a zero to the remainder making it 780, and continue the process.

Going ahead to step 8:
99 can be fit into 780 7 times, resulting in a remainder of 87.
Use 7 as the next digit of our solution. 
Result so far: 8869.87
The remainder is 87 after subtracting 693 from 780.
Since there are no more digits in the dividend, we add a zero to the remainder making it 870, and continue the process.

Going ahead to step 9:
99 can be fit into 870 8 times, resulting in a remainder of 78.
Write down 8 as next digit of the result. 
Result so far: 8869.878
Deduct 792 from 870 and we're left with 78.
Since there are no more digits in the dividend, we add a zero to the remainder making it 780, and continue the process.

Advancing to step 10:
When dividing 780 by 99, we get 7 with a remainder of 87.
The number 7 becomes the next digit in our result. 
Result so far: 8869.8787
If we subtract 693 from 780, we get 87.
Since there are no more digits in the dividend, we add a zero to the remainder making it 870, and continue the process.

Going ahead to step 11:
99 goes into 870 8 times with a remainder of 78.
Put 8 as the next digit of the answer. 
Result so far: 8869.87878
If we subtract 792 from 870, we get 78.
Since there are no more digits in the dividend, we add a zero to the remainder making it 780, and continue the process.

Let's proceed to step 12:
99 goes into 780 7 times with a remainder of 87.
The number 7 becomes the next digit in our result. 
Result so far: 8869.878787
The remainder is 87 after subtracting 693 from 780.
Since there are no more digits in the dividend, we add a zero to the remainder making it 870, and continue the process.

Moving on to step 13:
When dividing 870 by 99, we get 8 with a remainder of 78.
Put 8 as the next digit of the answer. 
Result so far: 8869.8787878
The remainder is 78 after subtracting 792 from 870.
Since there are no more digits in the dividend, we add a zero to the remainder making it 780, and continue the process.

On to step 14:
99 goes into 780 7 times with a remainder of 87.
The number 7 becomes the next digit in our result. 
Result so far: 8869.87878787
If we subtract 693 from 780, we get 87.
Since there are no more digits in the dividend, we add a zero to the remainder making it 870, and continue the process.

The final result is 8869.87878787 with a remainder of 8.7e-08.