We divide 16337661 by 991
The aim is to understand the frequency of 991 in 16337661.

Advancing to step 1:
991 goes into 1 0 times with a remainder of 1.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 1 to get 1.
Grab the next digit (6) from the dividend, add it to 1, then carry on: 16 / 991

On to step 2:
If we divide 16 by 991, we get 0 and a remainder of 16.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 16 to get 16.
Fetch the next digit (3) from the dividend, attach it to 16 and continue: 163 / 991

Going ahead to step 3:
991 can be fit into 163 0 times, resulting in a remainder of 163.
Use 0 as the next digit of our solution. 
Result so far: 0.0
The remainder is 163 after subtracting 0 from 163.
Append the next digit (3) from the dividend to 163 and continue with: 1633 / 991

Going ahead to step 4:
The number 991 fits into 1633 1 times, leaving a remainder of 642.
The next digit of our result is 1. 
Result so far: 1.0
Deduct 991 from 1633 and we're left with 642.
Bring next digit (7) of the dividend behind the 642 and repeat the process: 6427 / 991

On to step 5:
When dividing 6427 by 991, we get 6 with a remainder of 481.
The number 6 becomes the next digit in our result. 
Result so far: 16.0
If we take 5946 away from 6427, we end up with 481.
Grab the next digit (6) from the dividend, add it to 481, then carry on: 4816 / 991

Moving on to step 6:
991 goes into 4816 4 times with a remainder of 852.
Put 4 as the next digit of the answer. 
Result so far: 164.0
Deduct 3964 from 4816 and we're left with 852.
Grab the next digit (6) from the dividend, add it to 852, then carry on: 8526 / 991

Step 7:
If we divide 8526 by 991, we get 8 and a remainder of 598.
Use 8 as the next digit of our solution. 
Result so far: 1648.0
Deduct 7928 from 8526 and we're left with 598.
Include the next digit (1) from the dividend after 598, then repeat: 5981 / 991

On to step 8:
991 can be fit into 5981 6 times, resulting in a remainder of 35.
Use 6 as the next digit of our solution. 
Result so far: 16486.0
If we subtract 5946 from 5981, we get 35.
Since there are no more digits in the dividend, we add a zero to the remainder making it 350, and continue the process.

Moving on to step 9:
When dividing 350 by 991, we get 0 with a remainder of 350.
Write down 0 as next digit of the result. 
Result so far: 16486.0
If we take 0 away from 350, we end up with 350.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3500, and continue the process.

Step 10:
3500 divided by 991 is 3 with a remainder of 527.
Write down 3 as next digit of the result. 
Result so far: 16486.03
If we subtract 2973 from 3500, we get 527.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5270, and continue the process.

Going ahead to step 11:
991 can be fit into 5270 5 times, resulting in a remainder of 315.
Write down 5 as next digit of the result. 
Result so far: 16486.035
If we subtract 4955 from 5270, we get 315.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3150, and continue the process.

Step 12:
When dividing 3150 by 991, we get 3 with a remainder of 177.
Write down 3 as next digit of the result. 
Result so far: 16486.0353
If we take 2973 away from 3150, we end up with 177.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1770, and continue the process.

Step 13:
1770 divided by 991 is 1 with a remainder of 779.
Write down 1 as next digit of the result. 
Result so far: 16486.03531
Deduct 991 from 1770 and we're left with 779.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7790, and continue the process.

Let's proceed to step 14:
7790 divided by 991 is 7 with a remainder of 853.
The next digit of our result is 7. 
Result so far: 16486.035317
If we subtract 6937 from 7790, we get 853.
Since there are no more digits in the dividend, we add a zero to the remainder making it 8530, and continue the process.

Let's proceed to step 15:
991 can be fit into 8530 8 times, resulting in a remainder of 602.
Use 8 as the next digit of our solution. 
Result so far: 16486.0353178
Subtracting 7928 from 8530 leaves us with 602.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6020, and continue the process.

On to step 16:
991 goes into 6020 6 times with a remainder of 74.
Use 6 as the next digit of our solution. 
Result so far: 16486.03531786
Subtracting 5946 from 6020 leaves us with 74.
Since there are no more digits in the dividend, we add a zero to the remainder making it 740, and continue the process.

In conclusion, the division gives 16486.03531786 with a balance of 7.4e-08.