We look at the division of 387733 by 99 
The aim is to understand the frequency of 99 in 387733.

Step 1:
3 divided by 99 is 0 with a remainder of 3.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 3 and we're left with 3.
Grab the next digit (8) from the dividend, add it to 3, then carry on: 38 / 99

On to step 2:
When dividing 38 by 99, we get 0 with a remainder of 38.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we take 0 away from 38, we end up with 38.
Append the next digit (7) from the dividend to 38 and continue with: 387 / 99

Advancing to step 3:
387 divided by 99 is 3 with a remainder of 90.
The number 3 becomes the next digit in our result. 
Result so far: 3.0
The remainder is 90 after subtracting 297 from 387.
Grab the next digit (7) from the dividend, add it to 90, then carry on: 907 / 99

Advancing to step 4:
If we divide 907 by 99, we get 9 and a remainder of 16.
Record the quotient 9 as the next digit in the result. 
Result so far: 39.0
Subtracting 891 from 907 leaves us with 16.
Fetch the next digit (3) from the dividend, attach it to 16 and continue: 163 / 99

Advancing to step 5:
163 divided by 99 is 1 with a remainder of 64.
Record the quotient 1 as the next digit in the result. 
Result so far: 391.0
Deduct 99 from 163 and we're left with 64.
Grab the next digit (3) from the dividend, add it to 64, then carry on: 643 / 99

Step 6:
The number 99 fits into 643 6 times, leaving a remainder of 49.
Record the quotient 6 as the next digit in the result. 
Result so far: 3916.0
Subtracting 594 from 643 leaves us with 49.
Since there are no more digits in the dividend, we add a zero to the remainder making it 490, and continue the process.

Step 7:
99 goes into 490 4 times with a remainder of 94.
The number 4 becomes the next digit in our result. 
Result so far: 3916.4
If we take 396 away from 490, we end up with 94.
Since there are no more digits in the dividend, we add a zero to the remainder making it 940, and continue the process.

Going ahead to step 8:
The number 99 fits into 940 9 times, leaving a remainder of 49.
The number 9 becomes the next digit in our result. 
Result so far: 3916.49
Subtract 891 from 940 to get 49.
Since there are no more digits in the dividend, we add a zero to the remainder making it 490, and continue the process.

On to step 9:
The number 99 fits into 490 4 times, leaving a remainder of 94.
Use 4 as the next digit of our solution. 
Result so far: 3916.494
Subtracting 396 from 490 leaves us with 94.
Since there are no more digits in the dividend, we add a zero to the remainder making it 940, and continue the process.

Let's proceed to step 10:
940 divided by 99 is 9 with a remainder of 49.
Record the quotient 9 as the next digit in the result. 
Result so far: 3916.4949
If we subtract 891 from 940, we get 49.
Since there are no more digits in the dividend, we add a zero to the remainder making it 490, and continue the process.

Let's proceed to step 11:
490 divided by 99 is 4 with a remainder of 94.
Record the quotient 4 as the next digit in the result. 
Result so far: 3916.49494
Subtract 396 from 490 to get 94.
Since there are no more digits in the dividend, we add a zero to the remainder making it 940, and continue the process.

Step 12:
The number 99 fits into 940 9 times, leaving a remainder of 49.
Write down 9 as next digit of the result. 
Result so far: 3916.494949
Deduct 891 from 940 and we're left with 49.
Since there are no more digits in the dividend, we add a zero to the remainder making it 490, and continue the process.

Going ahead to step 13:
99 can be fit into 490 4 times, resulting in a remainder of 94.
The number 4 becomes the next digit in our result. 
Result so far: 3916.4949494
Subtracting 396 from 490 leaves us with 94.
Since there are no more digits in the dividend, we add a zero to the remainder making it 940, and continue the process.

On to step 14:
99 can be fit into 940 9 times, resulting in a remainder of 49.
Use 9 as the next digit of our solution. 
Result so far: 3916.49494949
If we take 891 away from 940, we end up with 49.
Since there are no more digits in the dividend, we add a zero to the remainder making it 490, and continue the process.

The final outcome is 3916.49494949, with a leftover of 4.9e-08.