We look at the division of 65055972 by 91 
The aim is to understand the frequency of 91 in 65055972.

Let's proceed to step 1:
The number 91 fits into 6 0 times, leaving a remainder of 6.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we subtract 0 from 6, we get 6.
Include the next digit (5) from the dividend after 6, then repeat: 65 / 91

Let's proceed to step 2:
If we divide 65 by 91, we get 0 and a remainder of 65.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 65 after subtracting 0 from 65.
Bring next digit (0) of the dividend behind the 65 and repeat the process: 650 / 91

Advancing to step 3:
650 divided by 91 is 7 with a remainder of 13.
The next digit of our result is 7. 
Result so far: 7.0
Subtract 637 from 650 to get 13.
Grab the next digit (5) from the dividend, add it to 13, then carry on: 135 / 91

Moving on to step 4:
135 divided by 91 is 1 with a remainder of 44.
The number 1 becomes the next digit in our result. 
Result so far: 71.0
The remainder is 44 after subtracting 91 from 135.
Fetch the next digit (5) from the dividend, attach it to 44 and continue: 445 / 91

On to step 5:
If we divide 445 by 91, we get 4 and a remainder of 81.
Put 4 as the next digit of the answer. 
Result so far: 714.0
If we subtract 364 from 445, we get 81.
Fetch the next digit (9) from the dividend, attach it to 81 and continue: 819 / 91

Step 6:
If we divide 819 by 91, we get 9 and a remainder of 0.
The number 9 becomes the next digit in our result. 
Result so far: 7149.0
Subtracting 819 from 819 leaves us with 0.
Fetch the next digit (7) from the dividend, attach it to 0 and continue: 7 / 91

Moving on to step 7:
91 can be fit into 7 0 times, resulting in a remainder of 7.
The number 0 becomes the next digit in our result. 
Result so far: 71490.0
Subtract 0 from 7 to get 7.
Include the next digit (2) from the dividend after 7, then repeat: 72 / 91

Moving on to step 8:
If we divide 72 by 91, we get 0 and a remainder of 72.
Put 0 as the next digit of the answer. 
Result so far: 714900.0
Subtract 0 from 72 to get 72.
Since there are no more digits in the dividend, we add a zero to the remainder making it 720, and continue the process.

Advancing to step 9:
The number 91 fits into 720 7 times, leaving a remainder of 83.
Record the quotient 7 as the next digit in the result. 
Result so far: 714900.7
Deduct 637 from 720 and we're left with 83.
Since there are no more digits in the dividend, we add a zero to the remainder making it 830, and continue the process.

Step 10:
91 goes into 830 9 times with a remainder of 11.
Use 9 as the next digit of our solution. 
Result so far: 714900.79
Subtracting 819 from 830 leaves us with 11.
Since there are no more digits in the dividend, we add a zero to the remainder making it 110, and continue the process.

On to step 11:
110 divided by 91 is 1 with a remainder of 19.
Use 1 as the next digit of our solution. 
Result so far: 714900.791
If we take 91 away from 110, we end up with 19.
Since there are no more digits in the dividend, we add a zero to the remainder making it 190, and continue the process.

Going ahead to step 12:
The number 91 fits into 190 2 times, leaving a remainder of 8.
Put 2 as the next digit of the answer. 
Result so far: 714900.7912
The remainder is 8 after subtracting 182 from 190.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Let's proceed to step 13:
If we divide 80 by 91, we get 0 and a remainder of 80.
Use 0 as the next digit of our solution. 
Result so far: 714900.7912
The remainder is 80 after subtracting 0 from 80.
Since there are no more digits in the dividend, we add a zero to the remainder making it 800, and continue the process.

Let's proceed to step 14:
If we divide 800 by 91, we get 8 and a remainder of 72.
Write down 8 as next digit of the result. 
Result so far: 714900.791208
If we subtract 728 from 800, we get 72.
Since there are no more digits in the dividend, we add a zero to the remainder making it 720, and continue the process.

Going ahead to step 15:
The number 91 fits into 720 7 times, leaving a remainder of 83.
Record the quotient 7 as the next digit in the result. 
Result so far: 714900.7912087
If we subtract 637 from 720, we get 83.
Since there are no more digits in the dividend, we add a zero to the remainder making it 830, and continue the process.

Step 16:
91 can be fit into 830 9 times, resulting in a remainder of 11.
Record the quotient 9 as the next digit in the result. 
Result so far: 714900.79120879
If we subtract 819 from 830, we get 11.
Since there are no more digits in the dividend, we add a zero to the remainder making it 110, and continue the process.

The quotient of the division is 714900.79120879, and the remainder is 1.1e-08.