41964238 ÷ 991 
The aim is to understand the frequency of 991 in 41964238.

Let's proceed to step 1:
991 goes into 4 0 times with a remainder of 4.
The next digit of our result is 0. 
Result so far: 0.0
Subtracting 0 from 4 leaves us with 4.
Grab the next digit (1) from the dividend, add it to 4, then carry on: 41 / 991

On to step 2:
41 divided by 991 is 0 with a remainder of 41.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 41, we get 41.
Bring next digit (9) of the dividend behind the 41 and repeat the process: 419 / 991

On to step 3:
The number 991 fits into 419 0 times, leaving a remainder of 419.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 419, we end up with 419.
Grab the next digit (6) from the dividend, add it to 419, then carry on: 4196 / 991

Step 4:
991 goes into 4196 4 times with a remainder of 232.
Write down 4 as next digit of the result. 
Result so far: 4.0
If we subtract 3964 from 4196, we get 232.
Grab the next digit (4) from the dividend, add it to 232, then carry on: 2324 / 991

On to step 5:
When dividing 2324 by 991, we get 2 with a remainder of 342.
Put 2 as the next digit of the answer. 
Result so far: 42.0
Deduct 1982 from 2324 and we're left with 342.
Fetch the next digit (2) from the dividend, attach it to 342 and continue: 3422 / 991

Let's proceed to step 6:
When dividing 3422 by 991, we get 3 with a remainder of 449.
Use 3 as the next digit of our solution. 
Result so far: 423.0
If we take 2973 away from 3422, we end up with 449.
Grab the next digit (3) from the dividend, add it to 449, then carry on: 4493 / 991

Advancing to step 7:
The number 991 fits into 4493 4 times, leaving a remainder of 529.
Put 4 as the next digit of the answer. 
Result so far: 4234.0
The remainder is 529 after subtracting 3964 from 4493.
Take the next digit (8) from the dividend and append it to 529, then repeat: 5298 / 991

On to step 8:
If we divide 5298 by 991, we get 5 and a remainder of 343.
Put 5 as the next digit of the answer. 
Result so far: 42345.0
The remainder is 343 after subtracting 4955 from 5298.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3430, and continue the process.

Let's proceed to step 9:
991 goes into 3430 3 times with a remainder of 457.
The number 3 becomes the next digit in our result. 
Result so far: 42345.3
The remainder is 457 after subtracting 2973 from 3430.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4570, and continue the process.

On to step 10:
991 can be fit into 4570 4 times, resulting in a remainder of 606.
Write down 4 as next digit of the result. 
Result so far: 42345.34
The remainder is 606 after subtracting 3964 from 4570.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6060, and continue the process.

Moving on to step 11:
If we divide 6060 by 991, we get 6 and a remainder of 114.
Write down 6 as next digit of the result. 
Result so far: 42345.346
The remainder is 114 after subtracting 5946 from 6060.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1140, and continue the process.

Let's proceed to step 12:
The number 991 fits into 1140 1 times, leaving a remainder of 149.
The next digit of our result is 1. 
Result so far: 42345.3461
Subtracting 991 from 1140 leaves us with 149.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1490, and continue the process.

Going ahead to step 13:
1490 divided by 991 is 1 with a remainder of 499.
The next digit of our result is 1. 
Result so far: 42345.34611
If we subtract 991 from 1490, we get 499.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4990, and continue the process.

In conclusion, the division gives 42345.34611 with a balance of 0.000499.