We look at the division of 74688110 by 991 
The aim is to understand the frequency of 991 in 74688110.

Advancing to step 1:
991 can be fit into 7 0 times, resulting in a remainder of 7.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 7, we end up with 7.
Grab the next digit (4) from the dividend, add it to 7, then carry on: 74 / 991

Moving on to step 2:
When dividing 74 by 991, we get 0 with a remainder of 74.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 74 to get 74.
Include the next digit (6) from the dividend after 74, then repeat: 746 / 991

Let's proceed to step 3:
991 goes into 746 0 times with a remainder of 746.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 746, we get 746.
Bring next digit (8) of the dividend behind the 746 and repeat the process: 7468 / 991

Advancing to step 4:
When dividing 7468 by 991, we get 7 with a remainder of 531.
The next digit of our result is 7. 
Result so far: 7.0
Subtract 6937 from 7468 to get 531.
Include the next digit (8) from the dividend after 531, then repeat: 5318 / 991

Let's proceed to step 5:
5318 divided by 991 is 5 with a remainder of 363.
The next digit of our result is 5. 
Result so far: 75.0
If we subtract 4955 from 5318, we get 363.
Include the next digit (1) from the dividend after 363, then repeat: 3631 / 991

Advancing to step 6:
991 goes into 3631 3 times with a remainder of 658.
The next digit of our result is 3. 
Result so far: 753.0
Deduct 2973 from 3631 and we're left with 658.
Include the next digit (1) from the dividend after 658, then repeat: 6581 / 991

Let's proceed to step 7:
If we divide 6581 by 991, we get 6 and a remainder of 635.
Put 6 as the next digit of the answer. 
Result so far: 7536.0
The remainder is 635 after subtracting 5946 from 6581.
Grab the next digit (0) from the dividend, add it to 635, then carry on: 6350 / 991

Step 8:
6350 divided by 991 is 6 with a remainder of 404.
Use 6 as the next digit of our solution. 
Result so far: 75366.0
If we take 5946 away from 6350, we end up with 404.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4040, and continue the process.

On to step 9:
The number 991 fits into 4040 4 times, leaving a remainder of 76.
Put 4 as the next digit of the answer. 
Result so far: 75366.4
Deduct 3964 from 4040 and we're left 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.

Step 10:
760 divided by 991 is 0 with a remainder of 760.
Use 0 as the next digit of our solution. 
Result so far: 75366.4
If we subtract 0 from 760, we get 760.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7600, and continue the process.

Moving on to step 11:
991 can be fit into 7600 7 times, resulting in a remainder of 663.
Write down 7 as next digit of the result. 
Result so far: 75366.407
Subtract 6937 from 7600 to get 663.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6630, and continue the process.

Advancing to step 12:
When dividing 6630 by 991, we get 6 with a remainder of 684.
Use 6 as the next digit of our solution. 
Result so far: 75366.4076
The remainder is 684 after subtracting 5946 from 6630.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6840, and continue the process.

Step 13:
When dividing 6840 by 991, we get 6 with a remainder of 894.
Use 6 as the next digit of our solution. 
Result so far: 75366.40766
Subtracting 5946 from 6840 leaves us with 894.
Since there are no more digits in the dividend, we add a zero to the remainder making it 8940, and continue the process.

The final outcome is 75366.40766, with a leftover of 0.000894.