We look at the division of 148781 by 99 
The aim is to understand the frequency of 99 in 148781.

On to step 1:
1 divided by 99 is 0 with a remainder of 1.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 1, we get 1.
Take the next digit (4) from the dividend and append it to 1, then repeat: 14 / 99

Step 2:
The number 99 fits into 14 0 times, leaving a remainder of 14.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 14, we get 14.
Bring next digit (8) of the dividend behind the 14 and repeat the process: 148 / 99

Step 3:
148 divided by 99 is 1 with a remainder of 49.
Put 1 as the next digit of the answer. 
Result so far: 1.0
The remainder is 49 after subtracting 99 from 148.
Append the next digit (7) from the dividend to 49 and continue with: 497 / 99

Step 4:
99 can be fit into 497 5 times, resulting in a remainder of 2.
Record the quotient 5 as the next digit in the result. 
Result so far: 15.0
Subtract 495 from 497 to get 2.
Bring next digit (8) of the dividend behind the 2 and repeat the process: 28 / 99

Let's proceed to step 5:
The number 99 fits into 28 0 times, leaving a remainder of 28.
The next digit of our result is 0. 
Result so far: 150.0
If we subtract 0 from 28, we get 28.
Include the next digit (1) from the dividend after 28, then repeat: 281 / 99

Moving on to step 6:
When dividing 281 by 99, we get 2 with a remainder of 83.
Use 2 as the next digit of our solution. 
Result so far: 1502.0
Subtracting 198 from 281 leaves us with 83.
Since there are no more digits in the dividend, we add a zero to the remainder making it 830, and continue the process.

Let's proceed to step 7:
The number 99 fits into 830 8 times, leaving a remainder of 38.
Record the quotient 8 as the next digit in the result. 
Result so far: 1502.8
Subtract 792 from 830 to get 38.
Since there are no more digits in the dividend, we add a zero to the remainder making it 380, and continue the process.

Advancing to step 8:
When dividing 380 by 99, we get 3 with a remainder of 83.
Put 3 as the next digit of the answer. 
Result so far: 1502.83
Deduct 297 from 380 and we're left with 83.
Since there are no more digits in the dividend, we add a zero to the remainder making it 830, and continue the process.

On to step 9:
The number 99 fits into 830 8 times, leaving a remainder of 38.
The number 8 becomes the next digit in our result. 
Result so far: 1502.838
If we subtract 792 from 830, we get 38.
Since there are no more digits in the dividend, we add a zero to the remainder making it 380, and continue the process.

On to step 10:
If we divide 380 by 99, we get 3 and a remainder of 83.
Record the quotient 3 as the next digit in the result. 
Result so far: 1502.8383
If we subtract 297 from 380, we get 83.
Since there are no more digits in the dividend, we add a zero to the remainder making it 830, and continue the process.

Advancing to step 11:
When dividing 830 by 99, we get 8 with a remainder of 38.
Record the quotient 8 as the next digit in the result. 
Result so far: 1502.83838
Subtract 792 from 830 to get 38.
Since there are no more digits in the dividend, we add a zero to the remainder making it 380, and continue the process.

Advancing to step 12:
380 divided by 99 is 3 with a remainder of 83.
Use 3 as the next digit of our solution. 
Result so far: 1502.838383
Subtract 297 from 380 to get 83.
Since there are no more digits in the dividend, we add a zero to the remainder making it 830, and continue the process.

Advancing to step 13:
830 divided by 99 is 8 with a remainder of 38.
Write down 8 as next digit of the result. 
Result so far: 1502.8383838
Subtract 792 from 830 to get 38.
Since there are no more digits in the dividend, we add a zero to the remainder making it 380, and continue the process.

On to step 14:
380 divided by 99 is 3 with a remainder of 83.
The next digit of our result is 3. 
Result so far: 1502.83838383
Deduct 297 from 380 and we're left with 83.
Since there are no more digits in the dividend, we add a zero to the remainder making it 830, and continue the process.

After the division, we end up with 1502.83838383 and a remainder of 8.3e-08.