80453440 ÷ 99 
The aim is to understand the frequency of 99 in 80453440.

On to step 1:
If we divide 8 by 99, we get 0 and a remainder of 8.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 8, we end up with 8.
Fetch the next digit (0) from the dividend, attach it to 8 and continue: 80 / 99

Let's proceed to step 2:
If we divide 80 by 99, we get 0 and a remainder of 80.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we subtract 0 from 80, we get 80.
Grab the next digit (4) from the dividend, add it to 80, then carry on: 804 / 99

Advancing to step 3:
99 can be fit into 804 8 times, resulting in a remainder of 12.
Put 8 as the next digit of the answer. 
Result so far: 8.0
Subtracting 792 from 804 leaves us with 12.
Grab the next digit (5) from the dividend, add it to 12, then carry on: 125 / 99

Step 4:
99 can be fit into 125 1 times, resulting in a remainder of 26.
Record the quotient 1 as the next digit in the result. 
Result so far: 81.0
Subtract 99 from 125 to get 26.
Bring next digit (3) of the dividend behind the 26 and repeat the process: 263 / 99

Advancing to step 5:
The number 99 fits into 263 2 times, leaving a remainder of 65.
Write down 2 as next digit of the result. 
Result so far: 812.0
Subtract 198 from 263 to get 65.
Append the next digit (4) from the dividend to 65 and continue with: 654 / 99

On to step 6:
When dividing 654 by 99, we get 6 with a remainder of 60.
Use 6 as the next digit of our solution. 
Result so far: 8126.0
Subtracting 594 from 654 leaves us with 60.
Take the next digit (4) from the dividend and append it to 60, then repeat: 604 / 99

On to step 7:
99 can be fit into 604 6 times, resulting in a remainder of 10.
Use 6 as the next digit of our solution. 
Result so far: 81266.0
Subtract 594 from 604 to get 10.
Include the next digit (0) from the dividend after 10, then repeat: 100 / 99

Advancing to step 8:
If we divide 100 by 99, we get 1 and a remainder of 1.
The number 1 becomes the next digit in our result. 
Result so far: 812661.0
Subtracting 99 from 100 leaves us with 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

On to step 9:
99 goes into 10 0 times with a remainder of 10.
The number 0 becomes the next digit in our result. 
Result so far: 812661.0
Deduct 0 from 10 and we're left with 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

On to step 10:
If we divide 100 by 99, we get 1 and a remainder of 1.
The number 1 becomes the next digit in our result. 
Result so far: 812661.01
Deduct 99 from 100 and we're left with 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

On to step 11:
99 goes into 10 0 times with a remainder of 10.
The number 0 becomes the next digit in our result. 
Result so far: 812661.01
If we take 0 away from 10, we end up with 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Moving on to step 12:
100 divided by 99 is 1 with a remainder of 1.
Use 1 as the next digit of our solution. 
Result so far: 812661.0101
If we take 99 away from 100, we end up with 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

Going ahead to step 13:
The number 99 fits into 10 0 times, leaving a remainder of 10.
Put 0 as the next digit of the answer. 
Result so far: 812661.0101
The remainder is 10 after subtracting 0 from 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

On to step 14:
99 goes into 100 1 times with a remainder of 1.
The number 1 becomes the next digit in our result. 
Result so far: 812661.010101
Subtract 99 from 100 to get 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

Step 15:
The number 99 fits into 10 0 times, leaving a remainder of 10.
Record the quotient 0 as the next digit in the result. 
Result so far: 812661.010101
Subtract 0 from 10 to get 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Advancing to step 16:
99 goes into 100 1 times with a remainder of 1.
The next digit of our result is 1. 
Result so far: 812661.01010101
Deduct 99 from 100 and we're left with 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

In conclusion, the division gives 812661.01010101 with a balance of 1e-09.