We divide 66533 by 91
The aim is to understand the frequency of 91 in 66533.

Let's proceed to step 1:
6 divided by 91 is 0 with a remainder of 6.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 6, we end up with 6.
Take the next digit (6) from the dividend and append it to 6, then repeat: 66 / 91

Moving on to step 2:
91 goes into 66 0 times with a remainder of 66.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we take 0 away from 66, we end up with 66.
Include the next digit (5) from the dividend after 66, then repeat: 665 / 91

Going ahead to step 3:
91 can be fit into 665 7 times, resulting in a remainder of 28.
Put 7 as the next digit of the answer. 
Result so far: 7.0
If we subtract 637 from 665, we get 28.
Append the next digit (3) from the dividend to 28 and continue with: 283 / 91

Advancing to step 4:
When dividing 283 by 91, we get 3 with a remainder of 10.
The next digit of our result is 3. 
Result so far: 73.0
If we subtract 273 from 283, we get 10.
Append the next digit (3) from the dividend to 10 and continue with: 103 / 91

Going ahead to step 5:
103 divided by 91 is 1 with a remainder of 12.
The number 1 becomes the next digit in our result. 
Result so far: 731.0
If we take 91 away from 103, we end up with 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

On to step 6:
120 divided by 91 is 1 with a remainder of 29.
The number 1 becomes the next digit in our result. 
Result so far: 731.1
Deduct 91 from 120 and we're left with 29.
Since there are no more digits in the dividend, we add a zero to the remainder making it 290, and continue the process.

Step 7:
91 goes into 290 3 times with a remainder of 17.
Record the quotient 3 as the next digit in the result. 
Result so far: 731.13
Subtract 273 from 290 to get 17.
Since there are no more digits in the dividend, we add a zero to the remainder making it 170, and continue the process.

Moving on to step 8:
If we divide 170 by 91, we get 1 and a remainder of 79.
Write down 1 as next digit of the result. 
Result so far: 731.131
Deduct 91 from 170 and we're left with 79.
Since there are no more digits in the dividend, we add a zero to the remainder making it 790, and continue the process.

Step 9:
91 goes into 790 8 times with a remainder of 62.
Put 8 as the next digit of the answer. 
Result so far: 731.1318
The remainder is 62 after subtracting 728 from 790.
Since there are no more digits in the dividend, we add a zero to the remainder making it 620, and continue the process.

Going ahead to step 10:
91 goes into 620 6 times with a remainder of 74.
The next digit of our result is 6. 
Result so far: 731.13186
If we take 546 away from 620, we end up 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.

Let's proceed to step 11:
If we divide 740 by 91, we get 8 and a remainder of 12.
The next digit of our result is 8. 
Result so far: 731.131868
Subtract 728 from 740 to get 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

Moving on to step 12:
The number 91 fits into 120 1 times, leaving a remainder of 29.
The number 1 becomes the next digit in our result. 
Result so far: 731.1318681
Subtracting 91 from 120 leaves us with 29.
Since there are no more digits in the dividend, we add a zero to the remainder making it 290, and continue the process.

Advancing to step 13:
91 can be fit into 290 3 times, resulting in a remainder of 17.
The next digit of our result is 3. 
Result so far: 731.13186813
Subtract 273 from 290 to get 17.
Since there are no more digits in the dividend, we add a zero to the remainder making it 170, and continue the process.

After the division, we end up with 731.13186813 and a remainder of 1.7e-08.