65982011 divided by 991 
The aim is to understand the frequency of 991 in 65982011.

Step 1:
991 can be fit into 6 0 times, resulting in a remainder of 6.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtracting 0 from 6 leaves us with 6.
Bring next digit (5) of the dividend behind the 6 and repeat the process: 65 / 991

Moving on to step 2:
991 can be fit into 65 0 times, resulting in a remainder of 65.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 65 to get 65.
Bring next digit (9) of the dividend behind the 65 and repeat the process: 659 / 991

On to step 3:
If we divide 659 by 991, we get 0 and a remainder of 659.
The next digit of our result is 0. 
Result so far: 0.0
Subtract 0 from 659 to get 659.
Grab the next digit (8) from the dividend, add it to 659, then carry on: 6598 / 991

On to step 4:
The number 991 fits into 6598 6 times, leaving a remainder of 652.
Put 6 as the next digit of the answer. 
Result so far: 6.0
The remainder is 652 after subtracting 5946 from 6598.
Fetch the next digit (2) from the dividend, attach it to 652 and continue: 6522 / 991

Moving on to step 5:
The number 991 fits into 6522 6 times, leaving a remainder of 576.
The number 6 becomes the next digit in our result. 
Result so far: 66.0
Deduct 5946 from 6522 and we're left with 576.
Take the next digit (0) from the dividend and append it to 576, then repeat: 5760 / 991

Advancing to step 6:
991 goes into 5760 5 times with a remainder of 805.
Record the quotient 5 as the next digit in the result. 
Result so far: 665.0
Subtracting 4955 from 5760 leaves us with 805.
Fetch the next digit (1) from the dividend, attach it to 805 and continue: 8051 / 991

On to step 7:
991 can be fit into 8051 8 times, resulting in a remainder of 123.
Use 8 as the next digit of our solution. 
Result so far: 6658.0
If we take 7928 away from 8051, we end up with 123.
Append the next digit (1) from the dividend to 123 and continue with: 1231 / 991

On to step 8:
The number 991 fits into 1231 1 times, leaving a remainder of 240.
Put 1 as the next digit of the answer. 
Result so far: 66581.0
If we subtract 991 from 1231, we get 240.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2400, and continue the process.

Moving on to step 9:
2400 divided by 991 is 2 with a remainder of 418.
Record the quotient 2 as the next digit in the result. 
Result so far: 66581.2
Subtracting 1982 from 2400 leaves us with 418.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4180, and continue the process.

Let's proceed to step 10:
991 can be fit into 4180 4 times, resulting in a remainder of 216.
Write down 4 as next digit of the result. 
Result so far: 66581.24
Deduct 3964 from 4180 and we're left with 216.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2160, and continue the process.

Advancing to step 11:
The number 991 fits into 2160 2 times, leaving a remainder of 178.
Use 2 as the next digit of our solution. 
Result so far: 66581.242
Subtracting 1982 from 2160 leaves us with 178.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1780, and continue the process.

Step 12:
The number 991 fits into 1780 1 times, leaving a remainder of 789.
The number 1 becomes the next digit in our result. 
Result so far: 66581.2421
The remainder is 789 after subtracting 991 from 1780.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7890, and continue the process.

Going ahead to step 13:
The number 991 fits into 7890 7 times, leaving a remainder of 953.
Use 7 as the next digit of our solution. 
Result so far: 66581.24217
If we take 6937 away from 7890, we end up with 953.
Since there are no more digits in the dividend, we add a zero to the remainder making it 9530, and continue the process.

Advancing to step 14:
9530 divided by 991 is 9 with a remainder of 611.
The number 9 becomes the next digit in our result. 
Result so far: 66581.242179
If we take 8919 away from 9530, we end up with 611.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6110, and continue the process.

Step 15:
991 can be fit into 6110 6 times, resulting in a remainder of 164.
Use 6 as the next digit of our solution. 
Result so far: 66581.2421796
Deduct 5946 from 6110 and we're left 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 16:
1640 divided by 991 is 1 with a remainder of 649.
Put 1 as the next digit of the answer. 
Result so far: 66581.24217961
Deduct 991 from 1640 and we're left with 649.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6490, and continue the process.

Our division results in 66581.24217961 with a remaining 6.49e-07.