Let's divide 80786682 by 991
The aim is to understand the frequency of 991 in 80786682.

Going ahead to step 1:
If we divide 8 by 991, we get 0 and a remainder of 8.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 8 leaves us with 8.
Append the next digit (0) from the dividend to 8 and continue with: 80 / 991

On to step 2:
When dividing 80 by 991, we get 0 with a remainder of 80.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 80, we get 80.
Take the next digit (7) from the dividend and append it to 80, then repeat: 807 / 991

On to step 3:
991 goes into 807 0 times with a remainder of 807.
Write down 0 as next digit of the result. 
Result so far: 0.0
The remainder is 807 after subtracting 0 from 807.
Fetch the next digit (8) from the dividend, attach it to 807 and continue: 8078 / 991

Step 4:
The number 991 fits into 8078 8 times, leaving a remainder of 150.
Record the quotient 8 as the next digit in the result. 
Result so far: 8.0
Deduct 7928 from 8078 and we're left with 150.
Include the next digit (6) from the dividend after 150, then repeat: 1506 / 991

Going ahead to step 5:
1506 divided by 991 is 1 with a remainder of 515.
The number 1 becomes the next digit in our result. 
Result so far: 81.0
Subtract 991 from 1506 to get 515.
Grab the next digit (6) from the dividend, add it to 515, then carry on: 5156 / 991

Advancing to step 6:
5156 divided by 991 is 5 with a remainder of 201.
Write down 5 as next digit of the result. 
Result so far: 815.0
Deduct 4955 from 5156 and we're left with 201.
Bring next digit (8) of the dividend behind the 201 and repeat the process: 2018 / 991

Moving on to step 7:
2018 divided by 991 is 2 with a remainder of 36.
Put 2 as the next digit of the answer. 
Result so far: 8152.0
Deduct 1982 from 2018 and we're left with 36.
Grab the next digit (2) from the dividend, add it to 36, then carry on: 362 / 991

Going ahead to step 8:
991 goes into 362 0 times with a remainder of 362.
The number 0 becomes the next digit in our result. 
Result so far: 81520.0
Subtracting 0 from 362 leaves us with 362.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3620, and continue the process.

Step 9:
When dividing 3620 by 991, we get 3 with a remainder of 647.
Write down 3 as next digit of the result. 
Result so far: 81520.3
Subtract 2973 from 3620 to get 647.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6470, and continue the process.

Going ahead to step 10:
The number 991 fits into 6470 6 times, leaving a remainder of 524.
Use 6 as the next digit of our solution. 
Result so far: 81520.36
If we subtract 5946 from 6470, we get 524.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5240, and continue the process.

Going ahead to step 11:
991 can be fit into 5240 5 times, resulting in a remainder of 285.
The number 5 becomes the next digit in our result. 
Result so far: 81520.365
Deduct 4955 from 5240 and we're left with 285.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2850, and continue the process.

Let's proceed to step 12:
The number 991 fits into 2850 2 times, leaving a remainder of 868.
Put 2 as the next digit of the answer. 
Result so far: 81520.3652
If we take 1982 away from 2850, we end up with 868.
Since there are no more digits in the dividend, we add a zero to the remainder making it 8680, and continue the process.

Advancing to step 13:
8680 divided by 991 is 8 with a remainder of 752.
The next digit of our result is 8. 
Result so far: 81520.36528
Subtracting 7928 from 8680 leaves us with 752.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7520, and continue the process.

Let's proceed to step 14:
7520 divided by 991 is 7 with a remainder of 583.
Use 7 as the next digit of our solution. 
Result so far: 81520.365287
Subtracting 6937 from 7520 leaves us with 583.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5830, and continue the process.

Advancing to step 15:
When dividing 5830 by 991, we get 5 with a remainder of 875.
Use 5 as the next digit of our solution. 
Result so far: 81520.3652875
Subtract 4955 from 5830 to get 875.
Since there are no more digits in the dividend, we add a zero to the remainder making it 8750, and continue the process.

Let's proceed to step 16:
8750 divided by 991 is 8 with a remainder of 822.
Write down 8 as next digit of the result. 
Result so far: 81520.36528758
The remainder is 822 after subtracting 7928 from 8750.
Since there are no more digits in the dividend, we add a zero to the remainder making it 8220, and continue the process.

In conclusion, the division gives 81520.36528758 with a balance of 8.22e-07.