Let's divide 781741 by 99
The aim is to understand the frequency of 99 in 781741.

Going ahead to step 1:
7 divided by 99 is 0 with a remainder of 7.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we take 0 away from 7, we end up with 7.
Fetch the next digit (8) from the dividend, attach it to 7 and continue: 78 / 99

Step 2:
99 goes into 78 0 times with a remainder of 78.
The next digit of our result is 0. 
Result so far: 0.0
Subtracting 0 from 78 leaves us with 78.
Grab the next digit (1) from the dividend, add it to 78, then carry on: 781 / 99

Moving on to step 3:
The number 99 fits into 781 7 times, leaving a remainder of 88.
Write down 7 as next digit of the result. 
Result so far: 7.0
If we take 693 away from 781, we end up with 88.
Include the next digit (7) from the dividend after 88, then repeat: 887 / 99

On to step 4:
99 can be fit into 887 8 times, resulting in a remainder of 95.
The next digit of our result is 8. 
Result so far: 78.0
Subtract 792 from 887 to get 95.
Include the next digit (4) from the dividend after 95, then repeat: 954 / 99

Moving on to step 5:
If we divide 954 by 99, we get 9 and a remainder of 63.
Put 9 as the next digit of the answer. 
Result so far: 789.0
If we take 891 away from 954, we end up with 63.
Bring next digit (1) of the dividend behind the 63 and repeat the process: 631 / 99

Let's proceed to step 6:
99 can be fit into 631 6 times, resulting in a remainder of 37.
Use 6 as the next digit of our solution. 
Result so far: 7896.0
Subtract 594 from 631 to get 37.
Since there are no more digits in the dividend, we add a zero to the remainder making it 370, and continue the process.

On to step 7:
370 divided by 99 is 3 with a remainder of 73.
Use 3 as the next digit of our solution. 
Result so far: 7896.3
Deduct 297 from 370 and we're left with 73.
Since there are no more digits in the dividend, we add a zero to the remainder making it 730, and continue the process.

Step 8:
When dividing 730 by 99, we get 7 with a remainder of 37.
The number 7 becomes the next digit in our result. 
Result so far: 7896.37
Subtracting 693 from 730 leaves us with 37.
Since there are no more digits in the dividend, we add a zero to the remainder making it 370, and continue the process.

Advancing to step 9:
The number 99 fits into 370 3 times, leaving a remainder of 73.
Put 3 as the next digit of the answer. 
Result so far: 7896.373
If we take 297 away from 370, we end up with 73.
Since there are no more digits in the dividend, we add a zero to the remainder making it 730, and continue the process.

Let's proceed to step 10:
When dividing 730 by 99, we get 7 with a remainder of 37.
The next digit of our result is 7. 
Result so far: 7896.3737
If we take 693 away from 730, we end up with 37.
Since there are no more digits in the dividend, we add a zero to the remainder making it 370, and continue the process.

Going ahead to step 11:
When dividing 370 by 99, we get 3 with a remainder of 73.
The next digit of our result is 3. 
Result so far: 7896.37373
Deduct 297 from 370 and we're left with 73.
Since there are no more digits in the dividend, we add a zero to the remainder making it 730, and continue the process.

Going ahead to step 12:
The number 99 fits into 730 7 times, leaving a remainder of 37.
The next digit of our result is 7. 
Result so far: 7896.373737
If we subtract 693 from 730, we get 37.
Since there are no more digits in the dividend, we add a zero to the remainder making it 370, and continue the process.

Let's proceed to step 13:
If we divide 370 by 99, we get 3 and a remainder of 73.
The next digit of our result is 3. 
Result so far: 7896.3737373
Deduct 297 from 370 and we're left with 73.
Since there are no more digits in the dividend, we add a zero to the remainder making it 730, and continue the process.

Advancing to step 14:
When dividing 730 by 99, we get 7 with a remainder of 37.
Record the quotient 7 as the next digit in the result. 
Result so far: 7896.37373737
If we subtract 693 from 730, we get 37.
Since there are no more digits in the dividend, we add a zero to the remainder making it 370, and continue the process.

The final outcome is 7896.37373737, with a leftover of 3.7e-08.