We look at the division of 16421099 by 591 
The aim is to understand the frequency of 591 in 16421099.

Moving on to step 1:
591 can be fit into 1 0 times, resulting in a remainder of 1.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 1, we get 1.
Grab the next digit (6) from the dividend, add it to 1, then carry on: 16 / 591

Moving on to step 2:
The number 591 fits into 16 0 times, leaving a remainder of 16.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 16 leaves us with 16.
Append the next digit (4) from the dividend to 16 and continue with: 164 / 591

Going ahead to step 3:
164 divided by 591 is 0 with a remainder of 164.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 164, we get 164.
Grab the next digit (2) from the dividend, add it to 164, then carry on: 1642 / 591

Moving on to step 4:
591 goes into 1642 2 times with a remainder of 460.
The next digit of our result is 2. 
Result so far: 2.0
Subtracting 1182 from 1642 leaves us with 460.
Fetch the next digit (1) from the dividend, attach it to 460 and continue: 4601 / 591

Going ahead to step 5:
4601 divided by 591 is 7 with a remainder of 464.
The next digit of our result is 7. 
Result so far: 27.0
Subtract 4137 from 4601 to get 464.
Append the next digit (0) from the dividend to 464 and continue with: 4640 / 591

Advancing to step 6:
4640 divided by 591 is 7 with a remainder of 503.
The next digit of our result is 7. 
Result so far: 277.0
The remainder is 503 after subtracting 4137 from 4640.
Append the next digit (9) from the dividend to 503 and continue with: 5039 / 591

On to step 7:
591 can be fit into 5039 8 times, resulting in a remainder of 311.
The number 8 becomes the next digit in our result. 
Result so far: 2778.0
Subtracting 4728 from 5039 leaves us with 311.
Fetch the next digit (9) from the dividend, attach it to 311 and continue: 3119 / 591

Going ahead to step 8:
The number 591 fits into 3119 5 times, leaving a remainder of 164.
Use 5 as the next digit of our solution. 
Result so far: 27785.0
If we take 2955 away from 3119, we end up with 164.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1640, and continue the process.

Let's proceed to step 9:
591 goes into 1640 2 times with a remainder of 458.
Record the quotient 2 as the next digit in the result. 
Result so far: 27785.2
Subtracting 1182 from 1640 leaves us with 458.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4580, and continue the process.

On to step 10:
4580 divided by 591 is 7 with a remainder of 443.
Put 7 as the next digit of the answer. 
Result so far: 27785.27
Subtracting 4137 from 4580 leaves us with 443.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4430, and continue the process.

Let's proceed to step 11:
When dividing 4430 by 591, we get 7 with a remainder of 293.
Use 7 as the next digit of our solution. 
Result so far: 27785.277
If we take 4137 away from 4430, we end up with 293.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2930, and continue the process.

In conclusion, the division gives 27785.277 with a balance of 0.0293.