666742 divided by 99 
The aim is to understand the frequency of 99 in 666742.

On to step 1:
When dividing 6 by 99, we get 0 with a remainder of 6.
Use 0 as the next digit of our solution. 
Result so far: 0.0
The remainder is 6 after subtracting 0 from 6.
Take the next digit (6) from the dividend and append it to 6, then repeat: 66 / 99

Let's proceed to step 2:
66 divided by 99 is 0 with a remainder of 66.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 66 to get 66.
Bring next digit (6) of the dividend behind the 66 and repeat the process: 666 / 99

Advancing to step 3:
666 divided by 99 is 6 with a remainder of 72.
The next digit of our result is 6. 
Result so far: 6.0
Deduct 594 from 666 and we're left with 72.
Bring next digit (7) of the dividend behind the 72 and repeat the process: 727 / 99

Let's proceed to step 4:
99 can be fit into 727 7 times, resulting in a remainder of 34.
Record the quotient 7 as the next digit in the result. 
Result so far: 67.0
If we subtract 693 from 727, we get 34.
Take the next digit (4) from the dividend and append it to 34, then repeat: 344 / 99

Advancing to step 5:
344 divided by 99 is 3 with a remainder of 47.
Put 3 as the next digit of the answer. 
Result so far: 673.0
Deduct 297 from 344 and we're left with 47.
Include the next digit (2) from the dividend after 47, then repeat: 472 / 99

On to step 6:
472 divided by 99 is 4 with a remainder of 76.
The number 4 becomes the next digit in our result. 
Result so far: 6734.0
If we subtract 396 from 472, we get 76.
Since there are no more digits in the dividend, we add a zero to the remainder making it 760, and continue the process.

Step 7:
When dividing 760 by 99, we get 7 with a remainder of 67.
Write down 7 as next digit of the result. 
Result so far: 6734.7
Subtract 693 from 760 to get 67.
Since there are no more digits in the dividend, we add a zero to the remainder making it 670, and continue the process.

Going ahead to step 8:
99 can be fit into 670 6 times, resulting in a remainder of 76.
Record the quotient 6 as the next digit in the result. 
Result so far: 6734.76
The remainder is 76 after subtracting 594 from 670.
Since there are no more digits in the dividend, we add a zero to the remainder making it 760, and continue the process.

On to step 9:
99 goes into 760 7 times with a remainder of 67.
The number 7 becomes the next digit in our result. 
Result so far: 6734.767
Deduct 693 from 760 and we're left with 67.
Since there are no more digits in the dividend, we add a zero to the remainder making it 670, and continue the process.

Let's proceed to step 10:
When dividing 670 by 99, we get 6 with a remainder of 76.
Record the quotient 6 as the next digit in the result. 
Result so far: 6734.7676
If we take 594 away from 670, we end up with 76.
Since there are no more digits in the dividend, we add a zero to the remainder making it 760, and continue the process.

Going ahead to step 11:
99 goes into 760 7 times with a remainder of 67.
Write down 7 as next digit of the result. 
Result so far: 6734.76767
The remainder is 67 after subtracting 693 from 760.
Since there are no more digits in the dividend, we add a zero to the remainder making it 670, and continue the process.

Step 12:
The number 99 fits into 670 6 times, leaving a remainder of 76.
Use 6 as the next digit of our solution. 
Result so far: 6734.767676
If we subtract 594 from 670, we get 76.
Since there are no more digits in the dividend, we add a zero to the remainder making it 760, and continue the process.

Going ahead to step 13:
99 can be fit into 760 7 times, resulting in a remainder of 67.
Write down 7 as next digit of the result. 
Result so far: 6734.7676767
The remainder is 67 after subtracting 693 from 760.
Since there are no more digits in the dividend, we add a zero to the remainder making it 670, and continue the process.

Advancing to step 14:
The number 99 fits into 670 6 times, leaving a remainder of 76.
Put 6 as the next digit of the answer. 
Result so far: 6734.76767676
Subtracting 594 from 670 leaves us with 76.
Since there are no more digits in the dividend, we add a zero to the remainder making it 760, and continue the process.

In conclusion, the division gives 6734.76767676 with a balance of 7.6e-08.