Let's divide 58445590 by 991
The aim is to understand the frequency of 991 in 58445590.

Going ahead to step 1:
991 can be fit into 5 0 times, resulting in a remainder of 5.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 5, we end up with 5.
Append the next digit (8) from the dividend to 5 and continue with: 58 / 991

Let's proceed to step 2:
When dividing 58 by 991, we get 0 with a remainder of 58.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 58 leaves us with 58.
Include the next digit (4) from the dividend after 58, then repeat: 584 / 991

Let's proceed to step 3:
991 can be fit into 584 0 times, resulting in a remainder of 584.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtracting 0 from 584 leaves us with 584.
Fetch the next digit (4) from the dividend, attach it to 584 and continue: 5844 / 991

Step 4:
991 goes into 5844 5 times with a remainder of 889.
The next digit of our result is 5. 
Result so far: 5.0
Subtracting 4955 from 5844 leaves us with 889.
Take the next digit (5) from the dividend and append it to 889, then repeat: 8895 / 991

On to step 5:
When dividing 8895 by 991, we get 8 with a remainder of 967.
Put 8 as the next digit of the answer. 
Result so far: 58.0
Subtract 7928 from 8895 to get 967.
Take the next digit (5) from the dividend and append it to 967, then repeat: 9675 / 991

Step 6:
The number 991 fits into 9675 9 times, leaving a remainder of 756.
The number 9 becomes the next digit in our result. 
Result so far: 589.0
Subtracting 8919 from 9675 leaves us with 756.
Include the next digit (9) from the dividend after 756, then repeat: 7569 / 991

On to step 7:
7569 divided by 991 is 7 with a remainder of 632.
Put 7 as the next digit of the answer. 
Result so far: 5897.0
Deduct 6937 from 7569 and we're left with 632.
Include the next digit (0) from the dividend after 632, then repeat: 6320 / 991

Let's proceed to step 8:
6320 divided by 991 is 6 with a remainder of 374.
The next digit of our result is 6. 
Result so far: 58976.0
The remainder is 374 after subtracting 5946 from 6320.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3740, and continue the process.

Moving on to step 9:
3740 divided by 991 is 3 with a remainder of 767.
Use 3 as the next digit of our solution. 
Result so far: 58976.3
Subtracting 2973 from 3740 leaves us with 767.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7670, and continue the process.

Step 10:
991 goes into 7670 7 times with a remainder of 733.
The number 7 becomes the next digit in our result. 
Result so far: 58976.37
If we take 6937 away from 7670, we end up with 733.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7330, and continue the process.

Moving on to step 11:
7330 divided by 991 is 7 with a remainder of 393.
The next digit of our result is 7. 
Result so far: 58976.377
Subtracting 6937 from 7330 leaves us with 393.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3930, and continue the process.

After the division, we end up with 58976.377 and a remainder of 0.0393.