Let's divide 688781 by 99
The aim is to understand the frequency of 99 in 688781.

Going ahead to step 1:
99 can be fit into 6 0 times, resulting in a remainder of 6.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 6 and we're left with 6.
Include the next digit (8) from the dividend after 6, then repeat: 68 / 99

Advancing to step 2:
68 divided by 99 is 0 with a remainder of 68.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 68 to get 68.
Fetch the next digit (8) from the dividend, attach it to 68 and continue: 688 / 99

Step 3:
99 goes into 688 6 times with a remainder of 94.
Record the quotient 6 as the next digit in the result. 
Result so far: 6.0
If we take 594 away from 688, we end up with 94.
Fetch the next digit (7) from the dividend, attach it to 94 and continue: 947 / 99

Let's proceed to step 4:
99 goes into 947 9 times with a remainder of 56.
Use 9 as the next digit of our solution. 
Result so far: 69.0
Subtracting 891 from 947 leaves us with 56.
Grab the next digit (8) from the dividend, add it to 56, then carry on: 568 / 99

Moving on to step 5:
568 divided by 99 is 5 with a remainder of 73.
Use 5 as the next digit of our solution. 
Result so far: 695.0
Deduct 495 from 568 and we're left with 73.
Append the next digit (1) from the dividend to 73 and continue with: 731 / 99

Step 6:
If we divide 731 by 99, we get 7 and a remainder of 38.
Write down 7 as next digit of the result. 
Result so far: 6957.0
If we take 693 away from 731, we end up with 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 7:
380 divided by 99 is 3 with a remainder of 83.
The number 3 becomes the next digit in our result. 
Result so far: 6957.3
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.

On to step 8:
If we divide 830 by 99, we get 8 and a remainder of 38.
Record the quotient 8 as the next digit in the result. 
Result so far: 6957.38
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.

Step 9:
When dividing 380 by 99, we get 3 with a remainder of 83.
Record the quotient 3 as the next digit in the result. 
Result so far: 6957.383
Subtracting 297 from 380 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.

Going ahead to step 10:
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: 6957.3838
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.

Advancing to step 11:
The number 99 fits into 380 3 times, leaving a remainder of 83.
The number 3 becomes the next digit in our result. 
Result so far: 6957.38383
The remainder is 83 after subtracting 297 from 380.
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 12:
When dividing 830 by 99, we get 8 with a remainder of 38.
The next digit of our result is 8. 
Result so far: 6957.383838
Subtracting 792 from 830 leaves us with 38.
Since there are no more digits in the dividend, we add a zero to the remainder making it 380, and continue the process.

Step 13:
The number 99 fits into 380 3 times, leaving a remainder of 83.
The number 3 becomes the next digit in our result. 
Result so far: 6957.3838383
Subtracting 297 from 380 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.

Advancing to step 14:
99 goes into 830 8 times with a remainder of 38.
Use 8 as the next digit of our solution. 
Result so far: 6957.38383838
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.

Our division results in 6957.38383838 with a remaining 3.8e-08.